Krabbe, Gregers <br/><br/>
ENGINEERING economy 
H. G. Thuesen ...[et.al]., 
 - Berlin-New York  Springer-Verlag  c1970 
 - xv,349p.:  ill.;  26cm 
<br/><br/>Includes bibliography 
<br/><br/><label>ISBN: </label>0077079088 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus, Operational.