Homotopy theory :
Gray, Brayton
Homotopy theory : an introduction to algebraic topology Brayton Gray - New York : Academic Press, 1975. - 368p. ; 22 cm.
The fundamental groups Category theory
513.83
Homotopy theory : an introduction to algebraic topology Brayton Gray - New York : Academic Press, 1975. - 368p. ; 22 cm.
The fundamental groups Category theory
513.83