Teaching strategies in the social sciences for elementary grades: : ( teaching strategies II) 
Songco, Evelyn A. 
 - revised edition. 
 -  Katha Publishing Co., Inc.,  2002 
 - v, 146 p. ;. 
9-71574040-5
F 372.83 T22 2002
                        9-71574040-5
F 372.83 T22 2002