@book{257,
	author = {Nadkarni, R. A.},
	title = {Guide to ASTM test methods for the analysis of coal and coke /},
	publisher = {ASTM International,},
	year = {c2008.},
	address = {West Conshohocken, PA :},
	url = {http://www.loc.gov/catdir/toc/fy0805/2008006132.html}
}