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APA Zitierstil

Petrov, P., Velev, S., & Nikolov, B. (1990). Complex physical geographic study of the region of the town of Isperih, with elements of paleolandscape reconstruction. (Bulg.m.engl.Res.) -.

Chicago Zitierstil

Petrov, P., S. Velev, and B. Nikolov. Complex Physical Geographic Study of the Region of the Town of Isperih, With Elements of Paleolandscape Reconstruction. (Bulg.m.engl.Res.) -. 1990.

MLA Zitierstil

Petrov, P., S. Velev, and B. Nikolov. Complex Physical Geographic Study of the Region of the Town of Isperih, With Elements of Paleolandscape Reconstruction. (Bulg.m.engl.Res.) -. 1990.