𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The Effect of Unionism on Accidents in U.S. Coal Mining, 1897–1929

✍ Scribed by WILLIAM M. BOAL

Book ID
111077859
Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
206 KB
Volume
48
Category
Article
ISSN
0019-8676

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An aquatic biological survey was conducted in 1979-1980 to determine the effects of drainage from an active coal strip-mine on Trout Creek, in northwest Colorado, U .S .A . Sampling was conducted over four seasons at four stations for periphyton, benthic invertebrates and fish . Periphyton in Trout