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Interpretive science and related information in vocational agriculture; effective utilization of scientific principles and related information in organized agricultural instruction.

By Ross, W. Arthur..
Washington, U.S. Govt. print. off., 1936 .
v, 27 p. , "Prepared under the direction of J.A. Linke, chief, agricultural education service, United States Office of education, by W.A. Ross, subject-matter specialist in agricultural education. -Foreword. 23 cm..

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Farm forestry; timber farming including woods management and forest tree planting,

By Ross, W. Arthur..
Washington, U.S. Govt. print. off., 1939 .
vi, 63 p. , "Prepared cooperatively by the United States Department of the interior, Office of education and the United States Department of agriculture, Forest service." - Verso of t.p. | This bulletin supersedes Bulletin 169, which was issued by the Federal board for vocational education in June 1933."-Foreword. 23 cm..

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... Building electrical equipment for the farm,

By Ross, W. Arthur..
Washington, U.S. Govt. print. off., 1941 .
v, [1], 97 p. , Cover-title: Organized teaching material, building electrical equipment for the farm. | "Prepared cooperatively by the Federal security agency, U. S. Office of education and the United States Department of agriculture, Rural electrification administration."--p. [ii] 23 cm..

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Directing vocational agriculture day-school students in developing their farming programs. Procedures for guiding students in planning and developing long-time supervised farming programs leading to establishment in farming,

By Ross, W. Arthur..
Washington, U.S. Govt. Print. Off., 1944 .
iv, 72 p. incl. illus., , "This bulletin replaces bulletins no. 117 ... and no. 163 ... published by the Federal Board for Vocational Education in June 1932."--Foreword. 23 cm..

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