Earl, Boyd. <br/><br/>
Groups and fields :   a program for self-instruction /  
Boyd Earl . 
 - New York :   McGraw-Hill Book Co.,   1961. 
 - 322 p. :    ill. ;    23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra --Problems, exercises, etc.------Programmed instruction.<br/>Algebra --Problems, exercises, etc.------Programmed instruction.
<br/><br/><label>Dewey Class. No.: </label>512.807