TY  - BOOK
AU  - Mamyrin B A
AU  -  Tolstikhin L N
TI  - Helium isotopes in nature
T2  - Developments in geochemistry; 3
U1  - H:(E100), M4 
PY  - 1984///
CY  - Amsterdam
PB  - Elsevier         
KW  -  Helium
KW  - Geology
ER  -