TY  - DATA
AU  - H. J. Baues
TI  - Obstruction Theory
T2  - Lecture Notes in Mathematics
SN  - 9783540359791
PY  - 1977///
CY  - Heidelberg
PB  - Springer Berlin
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0065144
ER  -