Mastery learning  : theory and practie 
James H. Block 
 - New York  Holt Rinehart  1971 
 - v, 152p. 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning, psychology of<br/>Education
<br/><br/><label>Dewey Class. No.: </label>370.152  / BLM