Cook, Thomas D. <br/><br/>
Quasi-experimentation :  design & analysis issues for field settings / 
by Thomas D. Cook and Donald T. Campbell 
 - Boston :  Houghton Mifflin Company,  1979. 
 - xii, 405 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 387-396. 
<br/><br/><label>ISBN: </label>0395307902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.<br/>Social sciences--Fieldwork.
<br/><br/><label>LC Class. No.: </label>H62.C66 1979