What does ISG stand for?
ISG stands for "International Stratigraphic Guide"
How to abbreviate "International Stratigraphic Guide"?
"International Stratigraphic Guide" can be abbreviated as ISG
What is the meaning of ISG abbreviation?
The meaning of ISG abbreviation is "International Stratigraphic Guide"
What does ISG mean?
ISG as abbreviation means "International Stratigraphic Guide"
