00776nam0-22002531i-450-990001131380403321000113138FED01000113138(Aleph)000113138FED0100011313820000920d1981----km-y0itay50------baengCommutator calculus and groups of homotopy classesby Baues.Cambridge [etc.]Cambridge University Press1981London Mathematical Society lecture note seriesBaues,Hans Joachim54336ITUNINARICAUNIMARCBK990001131380403321C-9-(5020574bisMA1MA1Commutator calculus and groups of homotopy classes82593UNINAING01