Gagne, Robert Mills,  1916- <br/><br/>
The conditions of learning / 
by Robert M. Gagne 
 - 3rd ed. 
 - New York :  Holt, Rinehart and Winston,  1977 
 - xii, 339 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0030899656 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning, Psychology of<br/>Learning<br/>Instructional systems