TY  - BOOK
AU  - McElroy, William D.
AU  - Swanson, Carl P.
TI  - Foundation of biology
T2  - Foundation of biology program
U1  - 574 
PY  - 1968///
CY  - Englewood, Cliffs.
PB  - Prentice-Hall
KW  - Biología
ER  -