Não informado. Association of Engineering Geologists newsletter. Association of Engineering Geologists.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Association of Engineering Geologists Newsletter. Lawrence, Kan: Association of Engineering Geologists.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Association of Engineering Geologists Newsletter. Association of Engineering Geologists.
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