TY  - SER
TI  - Biogas fertilizer system: technical report on a training seminar in China
T2  - UNEP reports and proceedings series
AV  - HC79 E5 U462 no.2
PY  - 1981///
CY  - Nairobi
PB  - United Nations Environment Programme
KW  - Fertilizers and manures
KW  - China
KW  - Biogas
ER  -