Mathematics for high school  intermediate mathematics.  Teacher's commentary 
prepared under the supervision of the Panel on Sample Textbooks of the School Mathematics Study Group, Frank B. Allen ... [et al.]. 
 - Rev. ed. 
 - New Haven  Yale University Press  c1961. 
 - 2 v.  ill.  26 cm. 
<br/><br/> Spine title: Intermediate mathematics. Commentary I-[II]. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Secondary)