Reference | {Deposit:: THE BRITISH SULPHUR CORP. LTD., 1980: WORLD SURVEY OF PHOSPHATE DEPOSITS, 4TH ED., LONDON}{Deposit:: DROZHEVA, P.P. & ORLOVA, E.V., 1937: THE CENOMANIAN PHOSPHORITE-BEARING SEDIMENTS OF THE NORTHERN BORDER OF THE DEPRESSION OF THE DNIEPR AND THE DONETZ; IN: GEOL. INVESTIGATIONS OF AGRICULTURAL ORES USSR. TRANSACT. SCI INST. FERTILIZERS & INSECTO-FUNGIC. NO.142} |