@book{578356,
	author = {AZZAM,HASAN,OMER,HASAN and AHMED SOHAIL},
	title = {PR-SOF-1150-DESIGN ABD FABRICATION OF THE DRIVE ASSEMBLY OF THE CONCENTRIC PARABOLIC COLLECTOR},
	publisher = {NUST COLLEGE OF EME},
	year = {2012},
	address = {ISLAMABAD}
}