TY  - BOOK
AU  - Welch, Claude A.
TI  - Biological science
T2  - Houghton Mifflin science program
SN  - 0395216702
U1  - 574 WEL 
PY  - 1976///
CY  - Boston
PB  - Houghton Mifflin
KW  - Biology
N2  - A textbook relating biological information to the twentieth century social framework
ER  -