lohr, v. (1974). trends of development and some topical problems in czechoslovak agriculture. the institute of national planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रlohr, v. Trends of Development and Some Topical Problems in Czechoslovak Agriculture. cairo: the institute of national planning, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रlohr, v. Trends of Development and Some Topical Problems in Czechoslovak Agriculture. the institute of national planning, 1974.
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