Baues, Hans J., 1943-, <br/><br/>
Obstruction theory on homotopy classification of maps / 
Hans J. Baues. 
 - Berlin :  Springer-Verlag  1977. 
 - xi, 387 pages :  ill. ;  25 cm. 
 - Lecture notes in mathematics  628. .
<br/><br/>Bibliography : p. 370-378. 
<br/><br/><label>ISBN: </label>3540085343 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstruction theory.<br/>Homotopy theory.<br/>Mappings (Mathematics).