• 3 Geology
• 1 Mineral industries

• 1 Congresso Brasileiro de Geologia
• 1 Ikatan Ahli Geologi Indonesia
• 1 Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap
• 1 Sociedade Brasileira de Geologia
• 1 World Petroleum Congress (3rd : 1952 : Hague, Netherlands)

• 2 English
• 1 Dutch
• 1 French
• 1 German
• 1 Indonesian
• 1 Portuguese
• 1 Spanish

• 1 Brazil
• 1 Indonesia
• 1 Netherlands

• 1 Congresses
• 1 Periodicals

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