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value 3 » value _
3 ratio » 3 radio
value 4 » value _, value a
4 ratio » 4 radio, 4 rating

1
Published 1995
Springer Berlin Heidelberg
... characteristics. Permian seas reached the most extreme values of carbon, sulfur, and strontium isotopic ratios...

2
Published 1995
Springer Berlin Heidelberg
... characteristics. Permian seas reached the most extreme values of carbon, sulfur, and strontium isotopic ratios...