The Carpathian; Black Hills cycadeoid parallel

G. R. Wieland

doi:10.2475/ajs.239.7.523

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Wieland, G. R. (1941). The Carpathian; Black Hills cycadeoid parallel. American Journal of Science, 239(7), 523–532. https://doi.org/10.2475/ajs.239.7.523

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The Carpathian; Black Hills Cycadeoid Parallel