TY  - BOOK
T1  - Matter and atomic structure programmed instruction in science.
LA  - English
UL  - https://tuklas.up.edu.ph/Record/UP-99796217606667292
OP  - 95
NO  - Teacher's handbook.--Chicago : SRA, [n.d.]
CN  - QC 173 S35
KW  - Mater : Properties : Problems, exercises, etc.
ER  -