A composite liner for plasterboard comprising a laminated sheet having outer plies of paper with an impervious, high tensile membrane sandwiched therebetween to impart impact, strength and water resistance. A plasterboard product comprising a core of gypsum covered on both sides, the cover of at least one side being a composite liner as described above.

Web www.patentalert.com

> Methods of the purification and use of moderately saline water particularly for use in aquaculture, horticulture and, agriculture

~ 00321