Smith , Frank . <br/><br/>
Principles of Class Teaching /  Textual Documents 
Frank Smith & A.S.Harrison. 
 - 1st ed. / 
 - England :  ELBS, English Language Book Society/Longman ,  1965. 
 - 390p. ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>English language Class Teaching G-Languages 
<br/><br/><label>Dewey Class. No.: </label>420.7  / Sm 56 P