TY  - BOOK
T1  - Introduction to mathematical structures.
A1  - Gordon, Charles K., Jr
LA  - English
PP  - Belmont, California
PB  - Dickenson Publishing Company, Inc.
YR  - 1967
UL  - https://tuklas.up.edu.ph/Record/UP-99796217607690146
CN  - QA248 G67 1967
ER  -