納爾遜 ((Nelson, Gerald C.))

資源、農業與食品經濟學 / by: 塞茨 ((Seitz, Wesley D.)); 納爾遜 ((Nelson, Gerald C.)); 哈爾克羅 ((Halcrow, Harold G.)); 田志宏; Seitz,, Wesley D.; Nelson,, Gerald C.; Halcrow,, Harold G. (Language materials, printed)