Hrachev, O. O., Etokov, V. I., Etokova, V. I., & Kukhtenko, T. O. (2011). Main Fields of Action of the NAS of Ukraine in Searching For Solutions to Problems of Rational Use of Nature and Environmental Protection in Ukraine (early 70's — early 90's of XX century, historical aspect).
Chicago-Zitierstil (17. Ausg.)Hrachev, O. O., V. I. Etokov, V. I. Etokova, und T. O. Kukhtenko. Main Fields of Action of the NAS of Ukraine in Searching For Solutions to Problems of Rational Use of Nature and Environmental Protection in Ukraine (early 70's — Early 90's of XX Century, Historical Aspect). 2011.
MLA-Zitierstil (8. Ausg.)Hrachev, O. O., et al. Main Fields of Action of the NAS of Ukraine in Searching For Solutions to Problems of Rational Use of Nature and Environmental Protection in Ukraine (early 70's — Early 90's of XX Century, Historical Aspect). 2011.