Editore: U. S. Department of Agriculture, Washington DC, 1932
Da: Book Booth, Berea, OH, U.S.A.
Paperback. Condizione: Good. minor shelf wear and cover soil, corners lightly bumped, markings from private library on front cover, stapled binding tight, pages 649-668, reprint from Journal of Agricultural Research, Vol. 44, No. 8, effect of plot size and shape on yields and efficiencies, bw illustrations Size: 6 x 9.