Guidance manual for leather tanning and finishing pretreatment standards /

"September 1986."

Pretreatment of discharges to publicly owned treatment works: federal guidelines.

Mode of access: Internet.

Summaries of categorical pretreatment standards /

"November, 1987."

The sedimentary carbonate-hosted giant Bayan Obo REE-Fe-Nb ore deposit of Inner Mongolia, China : a cornerstone example for giant polymetallic ore deposits of hydrothermal origin /

Mode of access: Internet.