TY  - BOOK
T1  - Vectors in Group Change
A1  - Rohrbaugh, Lewis Henry
PP  - Philadelphia
PB  - University of Pennsylvania
YR  - 1940
UL  - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.63391
OP  - 83
NO  - University of Pennsylvania
ER  -