TY  - BOOK
AU  - Earl,Boyd
TI  - Groups and fields: a programmed unit in modern mathematics
U1  - 512.807 
PY  - 1963///
CY  - New York
PB  - McGraw-Hill
KW  - Algebra
KW  - Programmed instruction
KW  - Problems, exercises, etc
N1  - Includes index
ER  -