The future of helium as a natural resource / edited by William J. Nuttall, Richard H. Clarke, and Bartek A. Glowacki.
    London ;New York : Routledge / Taylor and Francis, 2012. XXXIX, 330 s. : il. ; 24 cm.
    (Routledge explorations in environmental economics ; 35)
    (Routledge Explorations in Environmental Economics 35)
    ISBN 978-0-415-57697-0 (hbk)     ISBN 978-0-203-12067-5 (ebk)

   
T.15518        UKD: 502.13/.14:621.039:330.1:502.17:620.92:546.1/.2]=111