00485nas a2200073   4500008003900000245026000039210006900299856004300368       1987                          d00aPUSHKAREV, Yu.D., OSOKIN, A.C., KRAVCHENKO, M.P. and RYUNGENEN, G.I. 1987. Isotope composition of lead and strontium in apatites from the Gremyakha-Vyrmes alkaline massif as a basis for the determination of the age and source of the primary magmatic melt.0 aPUSHKAREV YuD OSOKIN AC KRAVCHENKO MP and RYUNGENEN GI 1987 Isot  uhttps://alkcarb.myrocks.info/node/6281