University of Illinois Urbana-Champaign

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Showing 2701–2730 of 18,134 items
Thumbnail for Study of Atmospheric Pollution Scavenging: Twenty-third Progress Report
Study of Atmospheric Pollution Scavenging: Twenty-third Progress Report
Semonin, Richard G.; Bowersox, Van C.; Stensland, Gary J.; Peden, Mark E.; Su, Jack; Williams, Allen L.

Thumbnail for Table of Contents
Table of Contents
Submitter: Howard Ding

Thumbnail for Sex Ratios and Age Ratios in North American Ducks
Sex Ratios and Age Ratios in North American Ducks
Bellrose, Frank Chapman; Scott, Thomas G.; Hawkins, Arthur Stuart; Low, Jessop B.

Thumbnail for Realizing the Reading and Information Needs of Youth
Realizing the Reading and Information Needs of Youth
Harmon, Charles; Bradburn, Frances B.