Geo-cosmic relations; the earth and its macro-environment :  Proceedings of the First International Congress on Geo-cosmic Relations, organized by the Foundation for Study and Research of Environmental Factors (S.R.E.F.), Amsterdam, 19-22 April 1989 / 
editors G. J. M. Tomassen ... (et al.) 
 - Wageningen :  Pudoc,  1990 
 - 364 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9022010066 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cosmic rays--Congresses