@book{1611,
	author = {Darwin, David.. and Nilson.,Arthur H. },
	title = {Design of concrete structures /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2017.},
	address = {Chennai :},
	edition = {15th ed.},
	url = {https://www.mheducation.com/highered/product/design-concrete-structures-darwin-dolan/M0073397946.html#toc-tab}
}