http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Benthic macroinvertebrate and fish populations in Maryland streams influenced by acid mine drainage
Includes bibliographical references (pages 35-37).
Pollution acide des cours d'eau, lacs, etc
Contribution (University of Maryland, College Park. Natural Resources Institute) ; no. 528