Minutes XXXIIIrd Executive committee meeting - Jully 12 and 17, 1989 - Washington, D.C., U.S.A.
- Norway Geological Survey 1989
- [6],12p. 26cm x 18.5cm
International union of geological sciences - Committee Minutes - 1989, U.S.A.
550 / IUG
International union of geological sciences - Committee Minutes - 1989, U.S.A.
550 / IUG