| 1987. Blue and yellow sapphire from from Kaduna Province, Nigeria. Journal of Gemmology 20, 7/8, 427-42...FGA Department of Geology, Chungnam National University, Daejon 305-764, Rep. of Korea Department of Geology...Freiburg, FRG; FRG; Mr I. Z. Z. Eliezri of Ramat Gan, Gan, Hänni of Basel, Switzerland; Dr R. Israel; Dr...Association of Hong Kong (GAHK) and a teacher at the Department of Geography and Geology, Hong Kong University...Kong harbour as a backdrop. the University's Department of Geography and Geology. Much use was made in |
