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by Raven, Peter H.; Hassenzahl, David M.; Hager, Mary Catherine; et al.
by Berg, Richard E.; Stork, David G.
by Berg, Janine; Kucera, David
by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College); David M. Hassenzahl
by Peter H. Raven (Missouri Botanical Garden); Linda R. Berg (St. Petersburg Junior College); David M. Hassenzahl (University of Nevada, Las Vegas )
by Linda R. Berg (St. Petersburg Junior College); Mary Catherine Hager; David M. Hassenzahl (University of Nevada, Las Vegas)
by Linda R. Berg (Former affiliations: University of Maryland, College Park; St. Petersburg College); David M. Hassenzahl (Chatham University); et al.
by Raven, Peter H.; Berg, Linda R.; Hassenzahl, David M.
by Berg, Linda R.; Hassenzahl, David M.; Hager, Mary Catherine
by Berg, Brian; Harn, P.j.; Mccormick, Bernie; et al.