Zwaan,J.C
Scripta Geologica Germmolgy,geology and origin of the Sandawana emerald deposit,Zimbabwe J.C.Zwaan - 1st. ed - LeidenbNational Museum of Natural history 2006 - 216p. ill. some colour 24cm
script 131, cover title
0375-7587, 90-6391-001-0
gemmology--emrald deposits--Zimbabwe
Scripta Geologica Germmolgy,geology and origin of the Sandawana emerald deposit,Zimbabwe J.C.Zwaan - 1st. ed - LeidenbNational Museum of Natural history 2006 - 216p. ill. some colour 24cm
script 131, cover title
0375-7587, 90-6391-001-0
gemmology--emrald deposits--Zimbabwe