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Kesimpulan seminar tentang bahaya perang nuklir yang diselenggarakan oleh Lembaga Penelitian Masalah-masalah Internasional (LPMI) Universitas 17 Agustus jakarta tanggal 6 Oktober 1984 di Jakarta

Earthquakes and volcanoes

Explains how earthquakes and volcanic eruptions result from the building up of pressure which begins far below the earth's surface

Explains how earthquakes and volcanic eruptions result from the building up of pressure which begins far below the earth's surface

Conservation and Pollution

Explains how the growth of industry in modern times has brought about the pollution of air, water, and land, as well as the depletion of natural resources, and emphasizes the importance of conservation.

Explains how the growth of industry in modern times has brought about the pollution of air, water, and land, as well as the depletion of natural resources, and emphasizes the importance of conservation.