The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
References
- Cameron, Frank K. 1915. Potash from Kelp. Washington, DC : Government Printing Office. Report (United States Dept. of Agriculture) ; no.100; Plate 28
- Cameron, Frank K. 1915. Potash from Kelp. Washington, DC : Government Printing Office. Report (United States Dept. of Agriculture) ; no.100; Plate 31
- Cameron, Frank K. 1915. Potash from Kelp. Washington, DC : Government Printing Office. Report (United States Dept. of Agriculture) ; no.100; Plate 32
- Cameron, Frank K. 1915. Potash from Kelp. Washington, DC : Government Printing Office. Report (United States Dept. of Agriculture) ; no.100; Plate 8
- W. Etter. 1990. Paläontologische Untersuchungen im unteren Opalinuston der Nordschweiz.
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