Laing, J. D. (1970). The Royal Observatory at the Cape of Good Hope 1820-1970: A sesquicentennial offering. Royal Observatory.
MLA CitationLaing, J. D. The Royal Observatory at the Cape of Good Hope 1820-1970: A Sesquicentennial Offering. Royal Observatory, 1970.
Warning: These citations have been automatically generated and may not always be 100% accurate..