Porter, R. S. (1974). The making of the science of geology in Britain 1660-1815. University of Cambridge.
Chicago-viite (17. p.)Porter, Roy Sydney. The Making of the Science of Geology in Britain 1660-1815. University of Cambridge, 1974.
MLA-viite (8. p.)Porter, Roy Sydney. The Making of the Science of Geology in Britain 1660-1815. University of Cambridge, 1974.
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