Trace metals in water supplies : occurrence, significance, and control : proceedings /

Mode of access: Internet.

Trace metals and marine production processes : proceedings of a workshop held at the Pacific Marine Environmental Laboratory, February 28 -March 2, 1978 /

Mode of access: Internet.

Land application of wastewater under high altitude conditions /

Mode of access: Internet.

Abundance of trace and minor elements in organic and mineral fractions of coal /

"August 1980."