Saettler, Paul <br/><br/>
The evolution of American educational technology 
/ Paul Saettler, ... 
. - Englewood  : Librairies Unlimited, 1990
. - XXVIII-570 p.  : ill., couv. ill.  ; 26 cm. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>0872876136 
<br/><br/><label>Source: </label> Don du C.C.A. 
<br/><br/><label>Universal Decimal Class. No.: </label>371.3