Dome, Rabert B. Doorveekshan Ke Siddhant | दूरवीक्षण के सिद्धान्त - Lucknow Hindi Samiti Suchna Vibhag. 1965 - 417 p. Ills. Subjects--Topical Terms: Uetraviolet Phenomena. Dewey Class. No.: 535 / D 32 D