Rajasthan GK Ahmedabad Sthit Sanstha " " Vedhshala " " Ne Udaipur Me Solar Vedhshala Ki Sthapanaa Kab Ki ?

अहमदाबाद स्थित संस्था " " वेधशाला " " ने उदयपुर में सौर वेधशाला की स्थापना कब की ? - When did the Ahmedabad-based organization "Observatory" set up the solar observatory in Udaipur? - Ahmedabad Sthit Sanstha " " Vedhshala " " Ne Udaipur Me Solar Vedhshala Ki Sthapanaa Kab Ki ? Rajasthan GK in hindi,  इतिहास कला एवं संस्कृति 1973 Me question answers in hindi pdf  1975 Me questions in hindi, Know About 1972 Me Rajasthan GK online test Rajasthan GK notes in hindi quiz book    1978 Me