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How to determine the age of fish?

What is hybridization: a natural or artificial process?

What is ontogeny and what are its features for human society?

Funny restless budgies.

Volzhanka: a plant for the shady garden

Pinus mugo - Mountain Pine: planting and care

How do you know the age of the fish easier way?

Where grow snowdrops and how remarkable these flowers

The trunk of the tree - a vital central highway

How cirrus clouds are formed, and what is their role

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Various methods of historical research
The command economy as the property of the state
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