BW163/20/2
                                "Table showing the Number of days in which there was less than three feet and less than four feet over the Ketch Shoal between Worcester and Gloucester from April 1836 to April 1838"
                            
                        
                            
                            Date
                                1836-1838
                            
                        
                            
                            Reference code
                                BW163/20/2
                            
                        
                            
                            Extent & medium
                                1 document