نتایج جستجو برای: clark
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It is a pleasure to join in this tribute to a great surgeon and teacher, Samuel Clark Harvey. Though not one of his official family, and with no claim of recognition as one of his pupils and associates, nevertheless I share with many others affection as well as admiration for this fine gentleman. Dr. Harvey's research contributions began when he was a medical student at Yale. It was probably be...
As more horticultural producers in the United States transition to organic production practices, they are challenged in finding consistent and economically viable sources of suitable potting media. Commercial, peat-based media approved for certified organic production are available and custom peat-based mixes that use certified organic fertilizers could also be used. Both of these options, howe...
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