| Reference | {Deposit:: BRITISH SULPHUR CORP. LTD., 1980: WORLD SURVEY OF PHOSPHATE DEPOSITS, 4TH ED., LONDON}{Deposit:: AXELROD, S., METZER, A., ROHRLICH, V., 1980: THE PETROGRAPHY OF ISRAELI PHOSPHATES AS RELATED TO THEIR BENEFICIATION. MARINE PHOSPHORITES-GEOCHEMISTRY, OCCURANCE, GENESIS, TULSA/OKLAHOMA}{Deposit:: NATHAN, Y. ET AL., 1979: THE GEOCHEMISTRY OF THE NORTHERN AND CENTRAL NEGEV PHOSPHORITES, GEOLOGICAL SURVEY OF ISRAEL, BULLETIN 73, JERUSALEM}{Production:: BUNDESSTELLE FUER AUSSENHANDELSINFORMATION, 20.2.1980} |