Grover, C. A <br/><br/>
Hyperbolic functions /  Their derivation and application in vector algebra 
C. A. Grover 
 - Manchester 21  Classifax Publications  1948 
 - 40 9. : 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>512.5  / GRO