@book{1923,
	author = {Shafqat Mahmud, Maj},
	title = {Study Use of Recycled / Waste Polythene Chips, Cement and Sand to Reduce the Shrinkage Potential of Clay Liner in Arid / Semi Arid Regions [MS Thesis] /},
	publisher = {National Institute of Transportation,},
	year = {2000},
	address = {Risalpur :}
}