Nielsen, Harry A. <br/><br/>
Methods of natural science :  an introduction / 
by H.A. Nielsen . 
 - Englewood :  Prentice-Hall,  1967. 
 - xv, 70 p. ;  23 cm. 
 - Prentice-Hall fundamentals of logic series. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Methodology.
<br/><br/><label>Dewey Class. No.: </label>P 501 NIE