The tourist's pocket book : containing useful words and simple phrases in English, French, German, Italian, Spanish, Portuguese, Dutch, ... and Hungarian. Medical and surgical hints; cypher code for telegrams and post cards; blank forms of washing lists ... to facilitate the sayings and doings of British and American travellers /

Mode of access: Internet.

Effects of acid precipitation on soil leachate quality : computer calculations /

Mode of access: Internet.

Water quality of four lakes in Lakeville, Minnesota /

"July 1980."

Public hearings on the draft NPDES permit for surface discharging private sewage disposal systems : Common Q & A.

"December 2006"

Gelsenkirchener bergwerks-actien-gesellschaft, gegründet 1873. Aktienkapital: 180 000 000 mark; arbeiterzahl: 50 000.

Text in German, Spanish, French, English.

Q meter TS-617B/U.

"February 1956."

Chemical and biological quality of streams at the Indiana Dunes National Lakeshore, Indiana, 1978-80 /

Bibliography: p. 55-57.