TY  - BOOK
T1  - Buying and selling
A1  - Individualized Science Instructional System
LA  - English
PP  - Lexington, MA
PB  - Ginn
YR  - 1976
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217606749497
NO  - Minicourse for secondary school students ; Annotated teacher's ed. ([76], 14 p.)
CN  - Q 163 I53 [no.2] 1976
KW  - Sales promotion : Juvenile literature.
ER  -