The grain tribute system of China, 1845-1911.

"Written as a doctoral dissertation at Harvard University in 1949-50."

Pesticides and volatile organic compounds in ground and surface water of the Palouse subunit, Washington and Idaho.

Mode of access: Internet.

Laboratory manual of elementary organic chemistry

Mode of access: Internet.

The ecological impact of synthetic organic compounds on esturine ecosystems /

Subject Profile Index: p.169-353.