1. Abdullah Khan, H.T. (1991), “Effects of selected socio‐economic and demographic factors on fertility: a path analysis”,Asian Profile, Vol. 19 No. 6, Hong Kong, December.
2. ACI (1998),Almost Half of Airport’s Revenues are Non‐aeronautical, Airports Council International, Geneva.
3. ACI (2000),Environmental Regulation Impacting Airports: Summaries and Case Studies, Airports Council International, Internet Publication (www.aci‐na. org), Washington, WA.
4. ACI‐NA (1998),Enforcement Policy Regarding Unfair Exclusionary Conduct in the Air Transportation Industry, Airports Council International, North America, Ref. OST‐98‐3713, Washington, WA.
5. Ang, G.K.I. And Wyatt, D.P. (1999), “Performance concept in the procurement of durability and serviceability of buildings”,Proceedings, 8dbmc Conference, Vol. 3, Vancouver, pp. 1821‐32.