Elemental concentration data for USGS Geochemical Exploration Reference Materials GXR-1 to GXR-4 and GXR-6

1994 ◽  
Vol 179 (1) ◽  
pp. 165-172 ◽  
Author(s):  
M. A. Gouveia ◽  
M. I. Prudêncio ◽  
J. S. Barros ◽  
L. Morgado ◽  
J. M. P. Cabral
1992 ◽  
Vol 16 (2) ◽  
pp. 111-300 ◽  
Author(s):  
Ernest S. GLADNEY ◽  
Elizabeth A. JONES ◽  
Eric J. NICKELL ◽  
Iwan ROELANDTS

1991 ◽  
Vol 15 (2) ◽  
pp. 199-396 ◽  
Author(s):  
Ernest S. Gladney ◽  
Elizabeth A. Jones ◽  
Eric J. Nickell ◽  
Iwan Roelandts

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