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Stilwell, J. D.; Zinsmeister, W. J. (1992). Molluscan Systematics and Biostratigraphy. Lower Tertiary La Meseta Formation, Seymour Island, Antarctic Peninsula. Antarctic Research Series 55. American Geophysical Union, Washington, D.C., ix + 192 pp.
Stilwell, J. D.; Zinsmeister, W. J. (1992). Molluscan Systematics and Biostratigraphy. Lower Tertiary La Meseta Formation, Seymour Island, Antarctic Peninsula. Antarctic Research Series 55. American Geophysical Union, Washington, D.C., ix + 192 pp.
