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John R. Hartman
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Journal Articles
Journal of Environmental Horticulture (2001) 19 (2): 73–78.
Published: 01 June 2001
Journal Articles
Journal of Environmental Horticulture (1993) 11 (4): 176–181.
Published: 01 December 1993
Journal Articles
Journal of Environmental Horticulture (1986) 4 (4): 120–124.
Published: 01 December 1986