Hoover, Kenneth <br/><br/>
The Elements of social scientific thinking. 

 - 6a ed. 
 - New york:   St. Martin's Press,   1995 
 - 7201 - 8000 p. T 10;   21 cm 
<br/><br/>Thinking scientifically. The elements of science. Strategies. Refinements. Measuring variables and relationships. Back to the roots. 
<br/><br/>1995 
<br/><br/><label>ISBN: </label>978-0-312-09643-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciencias Sociales
<br/><br/><label>Dewey Class. No.: </label>300