10 sinf biologiya 4 bsb 1 variant July 8, 2019 16 32 64 128 10 sinf biologiya 4 bsb javoblari 1 variant 10 sinf biologiya 4 mavzu 10 sinf biologiya 6 mavzu 10 sinf biologiya 10 mavzu 10 sinf biologiya 23 mavzu