TY  - BOOK
AU  - Welch,Claude A.H.
AU  - 
TI  - Teacher's guide for biological science molecules to man: the Biological Science Curriculum Study (BSCS) Blue Version
SN  - 0395218233
PY  - 1973///
CY  - Boston
PB  - Houghton Mifflin
KW  - Biology
ER  -