TY  - BOOK
AU  - Landin, Joseph
TI  - An Introduction to algebraic structures
SN  - 0-486-65940-2
PY  - 1969///
CY  - New York
PB  - Dover Publications
KW  - Elementary theory
KW  - Homomorphism
KW  - Polynomial rings
KW  - Real numbers
ER  -