Ya is a common Semitic vocative particle in several Semitic languages, including Arabic and Ugaritic, but not Hebrew.
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IAH is a scientific and educational organisation that is truly international, and was established to foster closer ties, cooperation and information exchange related to the study of groundwater.
By its statutes, the IAH is an association of individuals and corporate members, and not a federation of national committees.
IAH will accept as individual members anyone directly or indirectly engaged in study or research on, or management of water in its various forms related to hydrogeology, if sponsored by two members in good standing.