TY  - GEN
AU  - Johnson , Willis H.
AU  - Laubengayer , Richard A. 
AU  -  Delanney , Louis E.  
TI  - General biology
U1  - 570 
PY  - 1956///
CY  - New York
PB  - Holt Rinehart and Winston
KW  - Biology
ER  -