Molodezhʹ i okhrana prirody: Materialy respublikanskoĭ nauchno-prakticheskoĭ konferent͡s︡ii, 24-25 fevrali͡a︡ 1999 goda (Russian Edition)

ISBN: 978-5-8158-0024-3

ISBN-10: 5-8158-0024-4