<p>The main principle for the sustainable development of water resources is that the rate of extraction both from ground and surface water sources should not exceed the rate at which the resource is renewed and its extraction ...

The construction of polders was recognized as a potential method of developing coastal lowlands, river valleys, marshes and swamp ground, as well as tidal embayments and gulf areas. In as much as the largest populations ...

<p>The Mineral Resources Section of ESCAP in re[1]viewing industry data noted that minerals such as rutile, ilmenite, zircon and monazite were experiencing a strong demand and increasing prices especially during 1985. ...

This publication is the fifth in the new series of the ESCAP secretariat?s publications on mineral concentrations and hydrocarbon accumulations in the ESCAP region. The objective of this series is to make an inventory and ...