David B Johnson
Hygroscopic seeding of convective clouds
Urbana, Ill., Illinois State Water Survey, 1980.
Illinois Institute of Natural Resources
http://www.worldcat.org/oclc/29296614
http://library.wmo.int/opac/index.php?lvl=notice_display&id=2067


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(Illinois Institute of Natural Resources changed name to Department of Energy and Natural Resources in early fall 1981)
http://id.loc.gov/authorities/names/n79045930.html
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