Cook, Thomas D   1881-1965. <br/><br/>
Quasi-experimentation :   design & analysis issues for field settings / 
Thomas D Cook and Donald Thomas Campbell. 
 - Boston :   Houghton Mifflin,  ©1979. 
 - 405p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0395307902  9780395307908 
<br/><br/><label>Subjects--Topical Terms: </label><br/>	 Social sciences -- Research.<br/>Paleontology.<br/>Geology--Great Britain.
<br/><br/><label>LC Class. No.: </label>QE26  / .B15 
<br/><br/><label>Dewey Class. No.: </label>519.54  / COQ 1979