00485nas a2200073   4500008003900000245026000039210006900299856004300368       1969                          d00aBELL, K. and POWELL, J.L. 1969. Strontium isotopic studies of alkalic rocks: the potassium-rich lavas of the Birunga and Toro-Ankole regions, east and central equatorial Africa. Journal of Petrology, 10: 536-72.COMBE, A.D. and SIMMONS, W.C. 1933. The geol0 aBELL K and POWELL JL 1969 Strontium isotopic studies of alkalic   uhttps://alkcarb.myrocks.info/node/6907