TY  - BOOK
AU  - Jocher,Willy, x
AU  - x
TI  - Spawning problem fishes : x
SN  - x 
U1  - REF/597/JOS  
PY  - 1972///
CY  - N. Y. 
PB  - I.F.-H. 
KW  - Fishes
KW  - Zoology
ER  -