Blumenthal, Joseph C. <br/><br/>
English 2600 :  a programmed course in grammar and usage / 
Joseph C. Blumenthal. 
 - New York :  Harcourt Brace Jovanovich,  1981 
 - 448 p. ;  23 cm. 
<br/><br/> Open. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Programmed instruction.