1. Australian Cotton Cooperative Research Centre, Dep. of Agricultural Chemistry & Soil Science, Ross St. Building AO3; The Univ. of Sydney; Camperdown NSW 2006
2. NSW Agriculture; Wollongbar Agricultural Institute; Bruxner Highway Wollongbar NSW 2480
3. Jones Air; St. George QLD 4487
4. Australian Water Technologies; Environmental Labs.; 51 Hermitage Rd. West Ryde NSW 2114