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1.
Changes in farm production and efficiency / Donald D. Duroet and Evelyn T. Black by Series: Statistical bulletin ; no. 612
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, D. C. : U. S. Agricultural Research Service, Production Economics Research Branch., 1978
Availability: Items available for loan: National Library of India (1)Call number: U.S 338.10973021 Un 3.

2.
Changes in farm production and efficiency. / United States Department of Agriculture, Agricultural Research Service by Series: 1953: PERB / United States Department of Agriculture, Agricultural Research Service, Production Economic Research Service ; 3 | Staistical bulletin ; no.628. | 1954- : ARS 43 / Agricultural Research Service, United States Department of A
Material type: Continuing resource Continuing resource; Format: print ; Type of continuing resource: periodical
Language: English
Publication details: Washington, D.C. : U. S. Dept. of Agriculture, Agricultural Research Service, Production Economics Research Branch, 1980
Availability: Items available for loan: National Library of India (1)Call number: U.S 338.10973021 Un 3.

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