01197cam a22002531 4500 hew60000013 DLC 20260227111510.0 810804s1959 dcua f000 0 eng c hew60000013 (OCoLC)7639631 U.S. Dept. of Health, Education, and Welfare. Library WWauC DLC premarc LC1045 .A25 no. 280 Hollenberg, Alvin Herbert, 1901- Farm mechanics in vocational agriculture, a survey. [Washington] U.S. Dept. of Health, Education, and Welfare, Office of Education [1959] v, 28 p. tables. 24 cm. [U.S. Office of Education] Vocational Division. Bulletin no. 280. Agricultural series no. 74 With : Supervision to improve instruction in distributive education / Roman F. Warmke. Washington : U.S. Dept. of Health, Education, and Welfare. Office of Education, 1959. Bound together subsequent to publication. DLC Agricultural education United States. Agricultural engineering Study and teaching. United States. Division of Vocational Education. Bulletin ; no. 280. 34230 34230