TY  - BOOK
AU  - Balsicas, N.W.
TI  - A worktext in natural science: biological science
SN  - 971-685-621-0
U1  - GC 570 B196 2002 
PY  - 0000///Lorimar Publishing
CY  - Quezon City
KW  - Natural science
N1  - Includes bibliographies
ER  -