GSL/COM/SP/3/5
Authorised minutes of Special and Standing Committees, 1912-1966
1912, 1918-1966
GSL/COM/SP/3/6
Authorised minutes of Special and Standing Committees, 1948-1972
1948-1972
LDGSL/1037/VANDERHEIDE
Letter to Leonard Hawkes from S VAN DER HEIDE
4 Dec 1959
LDGSL/1041
Formation of the International Union of Geological Sciences
1959-1960