TY  - BOOK
AU  - Arkowitz,M.
AU  - Curjel,C.R.
TI  - Groups of homotopy classes: (rank formulas and homotopy-commutativity)
PY  - 1967///
CY  - Berlin
PB  - Springer-Verlag
KW  - Homotopy theory
KW  - Groups, theory of
N1  - Bibliography: p.34-35
ER  -