International lunar workshop : 'Towards a world strategy for the exploration and utilisation of our natural satellite' : Beatenberg (Interlaken), Switzerland 31 May-3 June 1994 / ed.: H. Balsiger ... [et al.]

International lunar workshop : 'Towards a world strategy for the exploration and utilisation of our natural satellite' : Beatenberg (Interlaken), Switzerland 31 May-3 June 1994 / ed.: H. Balsiger ... [et al.]