Directory of Wisconsin mineral producers, 1968 /
Meredith E. Ostrom.
APA Citation
Ostrom, M. Eggers., Wisconsin Geological and Natural History Survey. (1970). Directory of Wisconsin mineral producers, 1968. Madison: University of Wisconsin Geological and Natural History Survey.
MLA Citation
Ostrom, Meredith Eggers, and Wisconsin Geological and Natural History Survey. Directory of Wisconsin Mineral Producers, 1968. Madison: University of Wisconsin Geological and Natural History Survey, 1970.
Warning: These citations may not always be complete (especially for serials).