Ilin <br/><br/>
Основы теории упражнений по иностранномы языку:Osnovy teorii uprazhneniy po inostrannomy yazyku/Fundamentals of the theory of exercises in a foreign language 

 - Moscow  1975 
 - 152p. 
<br/><br/><label>Dewey Class. No.: </label>407 ILI/O