TY  - BOOK
T1  - Magic house of numbers
A1  - Adler, Irving
LA  - English
PP  - London
PB  - J. Day
YR  - 1957
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217606680441
OP  - 150
CN  - QA 95 A24 1957
KW  - Mathematical recreations.
KW  - Number concept.
ER  -