8 sinf biologiya ish reja 4 chorak. Qorabayir ob havo. Zararli odatlar va ularni oldini olish pdf.
Aq3d kastor. Laktofiltrum qo llanilishi. Ob havo samarqand urgut 10 kunlik.
Ixtirochilar haqida malumot kashfiyot.
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