Spence, W. R. <br/><br/>
Innovation :  the communication of change in ideas, practices and products / 
W.R.Spence. 
 - London :  Chapman & Hall,  1994. 
 - 253 p. ;  24 cm. 
<br/><br/>Bibliography : p.(239)-243. 
<br/><br/><label>ISBN: </label>041254220X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diffusion of innovations.<br/>Social change.<br/>Technological innovations--Social aspects.