Hendriks, Harrie <br/><br/>
Obstruction theory in 3 - Dimensional topology: an extension theorem 

 - Nijmegen:  Catholic University, Department of Mathematics,  1976. 
 - 9p.  24cm. 
 - Report 7617 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstruction theory<br/>Topology <br/>Three-dimensional display system
<br/><br/><label>LC Class. No.: </label>MATH QA3.R46 no.7617