@book{4393,
	author = {Gregg, J. V. and Hossell, C. H.,},
	title = {Mathematical trend curves;},
	publisher = {Published for Imperial Chemical Industries by Oliver and Boyd;},
	year = {1964.},
	series = {Mathematical and statistical techniques for industry. Monograph},
	address = {Edinburgh,},
	note = {Mathematical and statistical techniques for industry. Monograph no. 1}
}