00000nam a2200000 a 4500 20251203091010.0 514.2, D, mas Massey, William, S. Algebraic topology: an introduction New York Springer-Verlag 1977 xxi, 261p, 22 cm. Graduate texts in mathematics 56 Algebraic topology Eng 100 010 _ 31838 LIBSC C 26257 26257 0 0 0 0 PU PU 1998-04-08 0 514.2, D, mas 31838 BK