Gabriel, Peter <br/><br/>
Calculus of fractions and homotopy theory. 

 - Berlín :  Springer-Verlag,  1967. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometría<br/>Topología
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>513.83