Hempel Carl G. <br/><br/>
Philosophy of natural science 

 - London  Prentice-Hall            1966 
 - 116 p.  includes bibliographical references and index 
 - Foundations of philosophy series .
<br/><br/><label>Source: </label> Reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Science--Philosophy<br/>Natural science<br/>Ethics