Knopp konrad Dr <br/><br/>
Problem Book In The Theory And Variable Tr By H D 

 - New York  Dover  1945 
 - 138p 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Mathematics--Natural Sciences
<br/><br/><label>Dewey Class. No.: </label>517.5  / KNO-P