PDF files of Plant Teaching Articles

David R.Hershey dh321 at excite.com
Mon Jan 3 16:22:36 EST 2005

I scanned about a dozen of my plant education articles and converted
them to PDF files. Among the topics are irrigation water quality, light
measurement for plant growth, hydroponics, parasitic plants, history of
botany teaching, semi-quantitative analysis of ions in nutrient
solutions and terrarium history.

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