Mapping potential areas of ground subsidence in Estonian underground oil shale mining district
author                    
                    
                
statement of authorship                    
                    
I. Valgma
                            
                    
location of publication                    
                    
[S.l.]
                            
                    
year of publication                    
                    
                
pages                    
                    
p. 227-232 : ill
                            
                    
subject term                    
                    
                
subject of location                    
                    
                
notes                    
                    
Bibliogr. p. 232
                            
                    
language                    
                    
inglise
                            
                    
                            Valgma, I.* Mapping potential areas of ground subsidence in Estonian underground oil shale mining district // Proceedings of the 2nd International Conference "Environment. Technology. Resources" : Rezekne, Latvia, 25-27 June 1999. [S.l.], 1999. p. 227-232 : ill.