@book{3844,
	author = {Langman, Jan. and Langman, Jan},
	title = {Medical embryology :},
	publisher = {Williams & Wilkins},
	year = {[1975]},
	address = {Baltimore :},
	edition = {3d ed.},
	url = {https://books.google.com.pk/books?id=MIeayQEACAAJ&dq=0683048864&hl=en&sa=X&ved=2ahUKEwiT-PbXw-f0AhVWB2MBHVaGAn0Q6AF6BAgDEAE}
}