TY  - BOOK
AU  - Sergeev B F
AU  - Sergeev B F
TI  - World of the amphibians
SN  - 00 (pbk)
U1  - K93, M6 
PY  - 1986///
CY  - Moscow
PB  - MIR publishers      
KW  -  World of the amphibians
KW  - Zoology
ER  -