@book{41693,
	author = {Pon-an, May Paz S.},
	title = {Problems met by the teachers on the use of cooperative learning in classroom instruction in the selected elementary schools in the district of Valderrama, Antique for the school year 2006-2007 / },
	publisher = {Polytechnic State College of Antique ; },
	year = {2007},
	address = {Sibalom : }
}