(Year: 1989, Number: 15)

• Ahmet Gökçe. "Fluid inclusion studies of the veitype antimony mineralisations in Turhal (Tokat) area ", 1-6.
• Ahmet Güzel. "Konya Yarığıntepe cave ", 7-14.
• Reşat Ulusay, Zafer Yücel. "Example for the stability of slope excavated in weak rocks: Başkoyak barite open pit ", 15-28.
• Hasan Bayhan. "Petrographical and chemical- mineralogical characteristics of Keskin pluton (Ankara)", 29-36.
• Engin Arıoğlu, Gündüz Ökten. "Brown coal mining in Europe and Turkey ", 37-46.
• A. Sibel Özgür, Türker Özsayar. "Some Eocene Planctic foraminifera from Akçaabat (Trabzon) region", 47-54.
• Füsun Alkaya. "Kimmeridgian- Lower Tithonian ammonite fauna and stratigraphy of the Soğukçam (Bolu)", 55-74.
• Hakan Gençoğlu, Hasan Bayhan. "Lithofacial properties of Neogene basin of the Yeniköy -Küre- Çaltı (Bilecik- Söğüt) region and geological evolution", 75-88.
• A. Ümit Tolluoğlu. "Tectonic features of the Kırşehir (NW Kırşehir)", 89-104.
• O. Özcan Dora, Osman Candan. "Application of Schreinemakers method to an area located between Demirci- Borlu at the northern flank of the Menderes Massive", 105-114.
• Yadigar V. Müftüoğlu, Kenan Çolak. "Engineering properties of the roff rocks of the TTK Kozlu district", 115-122.
• Recep Kılıç, Ekrem Demirbaş. "Geotechnical properties of the upper Pliocene deposits around Kepir Lake (Sincan-Ankara)", 123-128.
• Selçuk Tokel. "Comparison of subduction and syn-collesion granitoids in Anatolia according to their chemical and metallogenetic characteristics", 129-138.
• K. Erçin Kasapoğlu, Aykut Barka, Levent Gülen, M. Nafi Toksöz. "Finite element analysis of the continental collision in the Eastern Anatolia",139-144.
• Alparslan Arıkan, Levent Tezcan. "Spatial variability of transmissivity values estimated from regression of specific capacity in Edremit plain", 145-150.
• Mehmet Ekmekçi, Alparslan Arıkan. "Relations of amount of Leakage to karstification zone in Beyşehir lake", 151-158.