@book{129283,
	title = {A study on the formation and properties of some sulphur-containing pyrylium salts derived from 3-hydroxy-5 : 6-benzthonaphthene (2:3)-Naphthoxythiophene) /},
	publisher = {University of Dhaka, },
	year = {1961.},
	address = {Dhaka : },
	note = {Thesis (MS) -- Department of Physics, University of Dhaka, 1961.}
}