TY  - BOOK
AU  - Olum,Paul
TI  - Invariants for effective homotopy classification and extension of mappings
T2  - Memoirs of the American Mathematical Society
AV  - QA612 .O48 1961
PY  - 1961///
CY  - Providence
PB  - American Mathematical Society
KW  - Algebraic topology
KW  - Invariants
KW  - Electronic books
N1  - Cover title; Bibliography: pages 68-69
UR  - https://ebookcentral.proquest.com/lib/bacm-ebooks/detail.action?docID=3113557
ER  -