TY  - BOOK
AU  -  Curtis,Helena
AU  -  Barnes,N.Sue
AU  -  Curtis,Helena
TI  -  Instructor's manual to accompany Invitation to biology, 3rd ed. / 
U1  -  570 CUR 
PY  - 1981///
CY  -  New York : 
PB  -  Worth Pub., 
KW  -  Biology
ER  -