@book{93676,
	author = {American Geophysical Union. and American Geophysical Union},
	title = {Transactions , American Geophysical Union :  },
	publisher = {American Geophysical Union.},
	address = {Washington :},
	note = {Vol. for 1920 reprinted from v. 6, no. 10 of the Proceedings of the National Academy of Sciences as National Research Council Reprint and circular series, no. 11.}
}