00479cas a2200169   450000100090000000300080000900500170001700800410003401000170007504000210009208200160011311000210012924500880015026000400023830000160027865000150029411210317BD-DhUL20170418174147.0750729s1970    nyuar    s   i0    0engx   a   77643940   aBD-DhULcBD-DhUL04a668.62bUND2 aUnited Nations. 10aDirectory of fertilizer production facilities :cUnited Nations. bpart 1, africa /  aNew York :bUnited Nations ,c1970.  av. ;c28 cm 0aTechnology