TY  - GEN
AU  - Hristo Popov
AU  - Nikola Nikolov
AU  - Ivan Lalov
TI  - Physics = Ð¤Ð¸Ð·Ð¸ÐºÐ°: year 10 = 10. ÐºÐ»Ð°ÑÑ
AV  - QC21.2  
PY  - 1989///
CY  - Sofia
PB  - Narodna Prosveta
KW  - Physics - Textbooks
ER  -