TY  - BOOK
AU  - Petrich, Mario.
TI  - Categories of algebraic systems: vectors and projective spaces, semigroups, rings and lattices
T2  - Lecture Notes in Mathematics 553
SN  - 354007998X
U1  - 512 
PY  - 1976///
CY  - Berlin
PB  - Springer-Verlag
ER  -