Agricultural supply functions - Earl O. Heady; C.B. Baker Howard G. Diesslin Earl Kehrberg Sydney Staniforth (Iowa Iowa State University Press, 1961)
Earl O. Heady; C.B. Baker; Howard G. Diesslin; Earl Kehrberg & Sydney Staniforth: Agricultural supply functions. Iowa. Iowa State University Press, 1961.--(338.1HEA)
ENGLISH