TY - BOOK AU - Baues,Hans J.,1943- TI - Obstruction theory on homotopy classification of maps SN - 3540085343 PY - 1977/// CY - Berlin PB - Springer-Verlag KW - Obstruction theory KW - Homotopy theory KW - Mappings (Mathematics) N1 - Bibliography : p. 370-378 ER -