TY  - BOOK
AU  - Earl,Boyd
TI  - Groups and fields : : a program for self-instruction / 
U1  - 512.807 
PY  - 1961///
CY  - New York : 
PB  - McGraw-Hill Book Co., 
KW  - Algebra
KW  - Programmed instruction
KW  - Problems, exercises, etc
ER  -