[Economic effectiveness of fertilizing recultivated soils in the Pernik coal-mining region [Bulgaria; wheat, maize, barley, lucerne, vetches, sainfoin]]
1978
Gushevilov, Zh. (Institut po Pochvoznanie i Programirane na Dobivite "N. Pushkarov", Sofia (Bulgaria))
书目信息
Ikonomika na Selskoto Stopanstvo (Bulgaria) | Rural Economics
卷
15
期
3
ISSN
0019-1760
页码
pp. 68-74
语言
保加利亚语
注释
6 ref. Summaries (En, Ru)
类型
Summary
团体作者
Ministerstvo na Zemedelieto i Khranitelnata Promishlenost, Sofia (Bulgaria)
1979-06-15
AGRIS AP