A. ÇALIK And U. Arzoğulları, "Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).," the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009 , Cluj, Romania, pp.187, 2009
ÇALIK, A. And Arzoğulları, U. 2009. Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).. the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009 , (Cluj, Romania), 187.
ÇALIK, A., & Arzoğulları, U., (2009). Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir). . the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009 (pp.187). Cluj, Romania
ÇALIK, AYTEN, And Uğur Arzoğulları. "Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).," the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009, Cluj, Romania, 2009
ÇALIK, AYTEN And Arzoğulları, Uğur. "Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).." the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009 , Cluj, Romania, pp.187, 2009
ÇALIK, A. And Arzoğulları, U. (2009) . "Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).." the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009 , Cluj, Romania, p.187.
@conferencepaper{conferencepaper, author={AYTEN ÇALIK And author={Uğur Arzoğulları}, title={Geology of the agate and opal - bearing formation in the Dereyalak village (Eskişehir).}, congress name={the 16th Meeting of the Association of European Geological Societies. Studia Universitatis Babeş - Bolyai, Geologia, Special Issue - MAEGS16,Cluj- July 9-13 2009}, city={Cluj}, country={Romania}, year={2009}, pages={187} }