Recommended CitationHamilton, D. F. Factors Influencing Dehardening and Rehardening of Forsythia x Intermedia Stems : Progress Report No. 4. Publication FHWA/IN/JHRP-72/04. Joint Highway Research Project, Indiana Department of Transportation and Purdue University, West Lafayette, Indiana, 1972. doi: 10.5703/1288284313809.
Joint Highway Research Project
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