Calkins, Lucy McCormick. <br/><br/>
The writing workshop :  a world of difference; a guide for staff development / 
Lucy McCormick Calkins and Shelley Harwayne. 
 - 1st ed. 
 - Portsmouth, NH :  Heinemann,  1987. 
 - 1x, 149p. +  1 videocassette. 
<br/><br/><label>ISBN: </label>043508450 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Composition & exercises.<br/>Report writing--Study & teaching.