The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
21st Century Fox - A COM 90130a101 70,772 2,682,793 SH   SOLE   2,463,065 0 219,728
21st Century Fox - B COM 90130a200 336,691 13,055,117 SH   SOLE   11,964,164 0 1,090,953
Accenture Plc. COM g1151c101 918,728 6,801,867 SH   SOLE   6,440,029 0 361,838
Allscripts Healthcare COM 01988P108 86,051 6,047,181 SH   SOLE   5,246,681 0 800,500
AmerisourceBergen COM 03073e105 468,703 5,664,090 SH   SOLE   5,179,127 0 484,963
Anixter Int'l. COM 035290105 100,688 1,184,567 SH   SOLE   1,024,882 0 159,685
Applied Ind. Tech. COM 03820c105 47,821 726,768 SH   SOLE   632,193 0 94,575
Armstrong World Ind. COM 04247x102 106,168 2,071,579 SH   SOLE   1,793,904 0 277,675
Arrow Electronics Inc. COM 042735100 87,556 1,088,873 SH   SOLE   923,373 0 165,500
Avery Dennison Corp. COM 053611109 95,817 974,342 SH   SOLE   845,412 0 128,930
Bank of NY Mellon COM 064058100 465,500 8,779,715 SH   SOLE   8,042,319 0 737,396
Berkshire Hath. Cl B COM 084670702 721,772 3,937,225 SH   SOLE   3,606,673 0 330,552
Broadridge Financial COM 11133t103 114,829 1,420,800 SH   SOLE   1,229,995 0 190,805
Cable One Inc. COM 12685j105 56,534 78,289 SH   SOLE   67,012 0 11,277
Carlisle Cos. Inc. COM 142339100 89,668 894,087 SH   SOLE   766,362 0 127,725
Casey's General Stores COM 147528103 50,422 460,686 SH   SOLE   398,886 0 61,800
CenturyLink Inc. COM 156700106 67,948 3,595,154 SH   SOLE   3,312,654 0 282,500
Cerner Corporation COM 156782104 540,965 7,585,044 SH   SOLE   6,948,958 0 636,086
Comcast Corp. COM 20030n101 682,064 17,725,166 SH   SOLE   16,236,235 0 1,488,931
Devon Energy Corp. COM 25179m103 174,289 4,747,728 SH   SOLE   4,339,597 0 408,131
Dollar General Corp COM 256677105 592,068 7,304,973 SH   SOLE   6,689,979 0 614,994
Ebay Inc. COM 278642103 560,980 14,586,059 SH   SOLE   13,358,257 0 1,227,802
ePlus Inc. COM 294268107 77,535 838,669 SH   SOLE   722,181 0 116,488
Esterline Technologies COM 297425100 93,536 1,037,564 SH   SOLE   927,364 0 110,200
Expeditors Int'l. COM 302130109 481,749 8,047,932 SH   SOLE   7,367,325 0 680,607
Factset Research Sys. COM 303075105 45,923 254,972 SH   SOLE   219,387 0 35,585
Fairfax Financial COM 303901102 3,477 6,700 SH   SOLE   6,700 0 0
FirstCash Inc. COM 33767d105 172,893 2,737,819 SH   SOLE   2,375,999 0 361,820
Genpact Ltd. COM g3922b107 136,547 4,749,445 SH   SOLE   4,103,670 0 645,775
Graham Holdings Co. COM 384637104 117,569 200,938 SH   SOLE   174,302 0 26,636
Greenlight Capital COM g4095j109 36,456 1,683,899 SH   SOLE   1,442,484 0 241,415
Honeywell Int'l. Inc. COM 438516106 640,804 4,520,984 SH   SOLE   4,145,192 0 375,792
Interpublic Group COM 460690100 91,988 4,424,625 SH   SOLE   3,803,725 0 620,900
JPMorgan Chase COM 46625h100 543,154 5,686,885 SH   SOLE   5,206,651 0 480,234
Kennedy-Wilson Hld. COM 489398107 60,965 3,286,505 SH   SOLE   2,837,005 0 449,500
Kirby Corp. COM 497266106 55,291 838,376 SH   SOLE   716,774 0 121,602
Level 3 Comm. COM 52729n308 380,416 7,138,592 SH   SOLE   6,536,831 0 601,761
Liberty Global LiLAC - C COM g5480u153 98,349 4,221,000 SH   SOLE   4,221,000 0 0
Manpowergroup Inc. COM 56418H100 110,306 936,224 SH   SOLE   800,024 0 136,200
MEDNAX Inc. COM 58502b106 44,239 1,025,953 SH   SOLE   920,503 0 105,450
Microsoft Corp. COM 594918104 308,045 4,135,391 SH   SOLE   3,786,017 0 349,374
MKS Instruments COM 55306n104 39,591 419,176 SH   SOLE   361,686 0 57,490
MSC Industrial Direct COM 553530106 39,364 520,895 SH   SOLE   450,185 0 70,710
Nestle SA ADR COM 641069406 420,139 5,001,055 SH   SOLE   4,588,767 0 412,288
NVR Inc. COM 62944t105 41,923 14,684 SH   SOLE   12,519 0 2,165
Omnicom Group COM 681919106 359,867 4,858,472 SH   SOLE   4,447,731 0 410,741
Oracle Corp. COM 68389x105 307,011 6,349,770 SH   SOLE   5,821,803 0 527,967
Paccar Inc. COM 693718108 478,646 6,616,614 SH   SOLE   6,061,374 0 555,240
Penske Automotive COM 70959w103 87,983 1,849,553 SH   SOLE   1,589,878 0 259,675
Potash Corp. COM 73755l107 709,104 36,855,741 SH   SOLE   34,912,618 0 1,943,123
Progressive Corp. COM 743315103 523,133 10,804,063 SH   SOLE   9,895,544 0 908,519
Robert Half Int'l. Inc. COM 770323103 109,666 2,178,505 SH   SOLE   1,889,105 0 289,400
Ryder System Inc. COM 783549108 102,260 1,209,465 SH   SOLE   1,044,260 0 165,205
Schlumberger Ltd. COM 806857108 694,338 9,953,239 SH   SOLE   9,419,194 0 534,045
Stanley Black & Deck COM 854502101 502,411 3,327,886 SH   SOLE   3,047,600 0 280,286
TE Connectivity Ltd. COM H84989104 681,504 8,204,963 SH   SOLE   7,753,937 0 451,026
TJX Companies Inc. COM 872540109 417,324 5,660,160 SH   SOLE   5,182,285 0 477,875
TriMas Corp. COM 896215209 77,757 2,879,901 SH   SOLE   2,492,676 0 387,225
Unilever PLC ADR COM 904767704 292,772 5,051,273 SH   SOLE   4,612,012 0 439,261
UnitedHealth Group COM 91324P102 679,639 3,470,202 SH   SOLE   3,187,413 0 282,789
Valmont Industries COM 920253101 52,932 334,799 SH   SOLE   289,499 0 45,300
ViaSat Inc. COM 92552v100 50,116 779,160 SH   SOLE   672,860 0 106,300
W.R. Berkley Corp. COM 084423102 70,016 1,049,085 SH   SOLE   905,635 0 143,450
White Mountains Ins. COM g9618e107 76,005 88,687 SH   SOLE   76,651 0 12,036
Woodward Inc. COM 980745103 107,545 1,385,706 SH   SOLE   1,203,585 0 182,121
Zions Bancorporation COM 989701107 42,357 897,776 SH   SOLE   767,861 0 129,915