TY  - BOOK
AU  - Szegi, J
TI  - Proceedings of the 9th international symposium: On soil biology and conservation of the biosphere vol 1
SN  - 9630547597
AV  - QH 541.56 .S94 1987
PY  - 1987///
CY  - Hungary
PB  - Akademai kiado, Budapest 
KW  - soil organism
ER  -