North African powder keg.

Mode of access: Internet.

Powder metallurgy; principles and methods.

Mode of access: Internet.

The formation of vegetable mould, through the action of worms with observations on their habits. Seventh thousand (corr.)

"Corrected."

Resource management plan/environmental impact statement for the Powder River Resource Area : Miles City district, Montana : draft /

Eight maps on folded sheets in 2 pockets.

The powder of sympathy,

Mode of access: Internet.

Rust, smut, mildew, & mould. An introduction to the study of microscopic Fungi.

"Sixth edition, revised and enlarged. Illustrated with 269 coloured figures by J.E. Sowerby."