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Books about Utrobi:
STA DETE DOZIVLJAVA U MAJCINOJ UTROBI? by Werner Gross (1990)
Wiki information Utrobi:
Ivan Stepanovich Utrobin was a former Soviet cross-country skier who competed during the early 1960s, training at VSS Trud in Moscow Oblast. He earned a bronze medal in the 4 x 10 km relay at 1964 Winter Olympics in Innsbruck. He also won a bronze...