Magnetic results ... Eskdalemuir, Hartland and Lerwick Observatories /
Natural Environment Research Council, Institute of Geological Sciences.

APA Citation

British Geological Survey., Institute of Geological Sciences (Great Britain). (1970). Magnetic results ... Eskdalemuir, Hartland and Lerwick Observatories. London: H.M.S.O..

MLA Citation

British Geological Survey, and Institute of Geological Sciences (Great Britain). Magnetic Results ... Eskdalemuir, Hartland And Lerwick Observatories. London: H.M.S.O., 1970.

Warning: These citations may not always be complete (especially for serials).