Hanson, Norwood Russell  <br/><br/>
Observation and explanation :   a guide to philosophy of science /  
by Norwood Russell Hanson 
 - London :   George Allen And Unwin Limited,   1972.  
 - 84p. :  
<br/><br/><label>ISBN: </label>0041000358 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy