Litsebi tsa tikoloho ea Univesithi ea Perm Polytechnic li thusa ho khutlisetsa mobu o silafalitsoeng ke lihlahisoa tsa oli
Litsebi tsa Ecologists ho tsoa Univesithing ea Perm Polytechnic li thehile theknoloji e tla thusa ho tsosolosa mobu oa mobu o silafalitsoeng ke lihlahisoa tsa peterole le litšepe tse boima, litlaleho ...
