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Instruction in farm mechanics; suggestions for developing training programs in farm mechanics in vocational agriculture.

By Hollenberg, Alvin Herbert,.
[Washington] U.S. Dept. of Health, Education, and Welfare, Office of Education 1957 .
v, 63 p. 23 cm..

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Farm mechanics in vocational agriculture, a survey.

By Hollenberg, Alvin Herbert,.
[Washington] U.S. Dept. of Health, Education, and Welfare, Office of Education 1959 .
v, 28 p. 24 cm..

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Buildings, equipment, and facilities for vocational agricultural education,

By Hollenberg, Alvin Herbert,.
[Washington] U.S. Dept. of Health, Education, and Welfare, Office of Education 1960 .
v, 90 p. , "OE-81003." 23 cm..

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Instruction in farm mechanics; suggestions for developing training programs in farm mechanics in vocational agriculture,

By Hollenberg, Alvin Herbert,.
[Washington] U.S. Dept. of Health, Education, and Welfare, Office of Education; [for sale by the Superintendent of Documents, U.S. Govt. Print. Off., 1964 .
vii, 128 p. , "OE-81009." 24 cm..

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