استعرض حسب الموضوع "nature"
الآن تُعرض المواد 1 -- 3 من 3
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optimum sample size for estimating dura crop yield rate in sudan
(the institute of national planning, 1976)the sudan is predominantly an agricultural country, agriculture is the main sector of its economy and its principal source of foreign exchange the government is building up most of its social and economical development ... -
price planning in socialism (bases and possibilities - its preparation, implementation and organization at the case of the german democratic)
(the institute of national planning, 1975-12) -
a systems approach to territoriality organized management
(the institute of national planning, 1976-07)in every socialist revolution, after the proletariat has solved the problem of capturing power there necessarily comes to the forefront the fundamental task of creating a social system superior to capitalism, namely raising ...