Answer key and teacher's guide to laboratory investigations, Biological science, molecules to man / 
Biological Sciences Curriculum Study. 
 - Rev. ed. 
 - Boston :  Houghton Mifflin,  c1968. 
<br/><br/> On cover: Blue version. 
<br/><br/>Bibliography: p. 233. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology -- Laboratory manuals.--Biology -- Laboratory manuals.