Title: Dokladi na II Nat͡sionalna konferent͡sii͡a po khidrologii͡a i khidrolozhki aspekti na vodostopanskite problemi, 12-15 maĭ 1987 g., Sofii͡a
First published: 1990
Subjects: Congresses, Hydrology, Water quality management
Places: Bulgaria
LC classification: GB726 .N37 1987