na INLIS000000000003032 20210519133519 210519||||||||| | ||| |||| || | 010-0521003032 en 631./EFF/p 631./EFF/p Efferson, J.N. Principles of farm management New York-Toronto-London McGraw-Hill Book Company, Inc 1953 vi, ill.: 431 p.; 24 cm + Index FARM MANAGEMENT