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16_29
Geo-cosmic Relations; The Earth and its Macro-environment-Proc. 1-st. Int. Congr.on Geo-cosm. Relations, Amsterdam 19-22 April 1989 / Ed. G.J. M.Tomassen et al., Pudoc, Wageningen, 1990.
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16_29
Geo-cosmic Relations; The Earth and its Macro-environment-Proc. 1-st. Int. Congr.on Geo-cosm. Relations, Amsterdam 19-22 April 1989 / Ed. G.J. M.Tomassen et al., Pudoc, Wageningen, 1990.
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