1. Lightweight concrete structures, potentialities, limits and realities;Bomhard,1980
2. Explosive volcanic activity İn the mediterranean, over the past 200,000 years as recorded İn deep-sea sediments;Keller;Geol Soc Amer Bull,1978
3. Volcanoes;Ritmann,1976
4. The Properties of hardened concrete with lightweight porous aggregates;Chinenkov,1980
5. Understanding the earth;Gass,1973