TY  - BOOK
T1  - Short-cut math.
A1  - Kelly,  Gerard W.
LA  - English
PP  - New York
PB  - Sterling Pub.
YR  - 1969
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217603707072
OP  - 112
CN  - QA 111 K4
KW  - Ready-reckoners.
ER  -