[The engineering project, a complex program of improving the management of agriculture]
1978
Penev, T.
书目信息
页码
pp. 87-92
语言
保加利亚语
注释
Summaries (Fr, Ru)
类型
Summary
团体作者
B"lgarska Akademiya na Naukite, Sofia (Bulgaria). Ikonomicheski Institut
1979-06-15
AGRIS AP