@book{841,
	author = {Hegel, Georg Wilhelm Friedrich, and Petry, Michael John,},
	title = {Hegel's philosophy of nature /},
	publisher = {Allen & Unwin;},
	year = {1970.},
	address = {London,},
	note = {Translation of Naturphilosophie, Teil 2 of Encyklopädie der philosophischen Wissenschaften.}
}