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PHISICAL&SOCIOECONOMIC GEOGRAPHY OF THE WORLD
Neli Petrova


World Geography, 9&10 Grades. A Testbook
Neli Petrova
Referens Book for the English Language Shcools.

Geography Of The World. 10th Class
Dimitar Kanchev, Neli Petrova
Referens Book for the English Language Shcools.

Chemistry and Enviromental Protection
Stefka Pedeva
Referens Book for the English Language Shcools.

Biology and Health Education. Textbook for the 9th class. Compulsory course
V. Ovcharov, S. Evtimova, M. Simeonovski, D. Simeonovska, M. Hristova


Biology for the 9th class. English Language.
B. Piriova, S. Evtimova, N. Tzaneva, N. Muleshkova, L. Bancheva


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