00485nas a2200073   4500008003900000245026000039210006900299856004300368       1989                          d00aBELL, K. (ed.) 1989. Carbonatites: genesis and evolution, Unwin Hyman, London. 618 pp.BELL, K. and DAWSON, J.B. 1995. Nd and Sr isotope systematics of the active carbonatite volcano, Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, 0 aBELL K ed 1989 Carbonatites genesis and evolution Unwin Hyman Lo  uhttps://alkcarb.myrocks.info/node/7584