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6 1 . Вас^е F r i t z . . . . denn s ic s o lle n s a t t w erd en .S trateg ie dec //eltkamp^es gegen den Hunger .Gerhard S ta llin g V erlag, Olden­ burg und Hamburg, 6 ^ .P roduction Y c^bcok 1966,Vol.20,FA0,Rome,1967, 6 5 . ШШ1е O tto .B ro t ftlr sechs I^ illia rd e n .U ran ia V erlag ,L eip zig - J e n a -B e rlin ,I 9 G 3 ♦ 64.'i‘he S ta te o f Food and A g ric u ltu re , 1963•J'AO,Home, 1965. 6i?.The S tory of Conversation on th e Praires.PFRA ,O ttaw a, 1961* 66 . The World A g i'icu ltu ral S itu a tio n .F o ro ig n A g ric u ltu ra l Econo­ mic R ep o rt, 1966 ,V o l.53• 6V.Wilson D.B. and C lark R .U ,Irrig a te d P astu res i n Southern Л1- berta.C onada Department of A grlcT ;dture,Publication 1160, O tta w a ,1964. Электронная Научная СельскоХозяйственная Библиотека