Water level changes from 1972 to 1988 ( in m.a.s.l.) [Quatar] = at- Taĝaiyur fī manāsīb al-muyāh al-ǧaufīya lil-fatra min 1972 ilā 1988 (bi-'l-mitr) (Dep. of Agricultural & Water Research, 1988)
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