@book{4868,
	title = {Phillips' science of dental materials},
	publisher = {ELSEVIER,},
	year = {2014.},
	address = {Missouri,},
	edition = {12th ed.},
	url = {https://books.google.com.pk/books?id=gzUeKDhP-KQC&printsec=frontcover&dq=Phillips%27+science+of+dental+materials&hl=en&sa=X&ved=2ahUKEwjMh8vdn-r0AhUF8xQKHU4JBPYQ6AF6BAgCEAI#v=onepage&q=Phillips'%20science%20of%20dental%20materials&f=false}
}