00654nam a2200205Ia 4500 CTU_15512 210402s9999 xx 000 0 und d 95df 681.763 F981tr FMO Tractors FMO Illinois John Deere 1991 There are two basis types of tractors: wheel tractors and crawier tractors. This book is concerned only with wheel tractors, the most popular on farms and ranches today. agricultural machinery operators Minh, 970409 Trung tâm Học liệu Trường Đại học Cần Thơ