TY  - BOOK
AU  - HOPSON, JANET L.
AU  - WESSELLS, NORMAN K.
TI  - ESSENTIALS OF BIOLOGY
SN  - 0075571080
U1  - 574 
PY  - 1990///
CY  - Estados Unidos
PB  - MCGRAW HILLS PUBLISHING COMPANY
KW  - BIOLOGIA
ER  -