Vermiculite /
by A.V. Petar.
APA Citation
Petar, A. Virginia. (1935). Vermiculite. [Washington]: U.S. Bureau of Mines.
MLA Citation
Petar, Alice Virginia, 1902-. Vermiculite. [Washington]: U.S. Bureau of Mines, 1935.
Warning: These citations may not always be complete (especially for serials).