//-->
Kommjunike o Soveščanii predstavitelej kommunisti českich i rabočich partij socialističeskich stran Evropy po obmenu opytom v razvitii sel'skog chozjajstva, 2.-3.2.1960 g. v Moskve
(1960)
World Land Reform Conference
Brown, James R., (1966)
Economic models and quantitative methods for decisions and planning in agriculture : proceedings of an East-West Seminar
Heady, Earl O., (1971)