Crawford, Helen J. <br/><br/>
Developing research skills:  a laboratory manual / 
Helen J. Crawford, Larry B. Christensen 
 - Boston :  Allyn and Bacon,  1985 
 - 196 p. ; 28 cm. 
<br/><br/><label>ISBN: </label>0205082467 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Investigacion
<br/><br/><label>LC Class. No.: </label>Q 180 C73