Выпуск 1329. Роман от школьного романа?

The man left Germany and moved to the Altai village of Kulunda in Russia. He did this because he had learned that his son, who looked exactly like him, had been born. However, years later, the child's mother admitted that she might have given birth to the boy from another man, but she was unsure. So, did the alleged father give his German surname to a boy with different blood?