Physics = Физика:  year 10 = 10. класс/ 
Hristo Popov, Nikola Nikolov, Ivan Lalov...[et al.] 
 - Sofia:  Narodna Prosveta,  1989. 
 - 174 p.:  fig.;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics - Textbooks
<br/><br/><label>LC Class. No.: </label>QC21.2