Tree and shrub watering collar
作者： Tiffany R. Slobodnik , James Slobodnik
DOI:
关键词: Collar 、 Shrub 、 Biology 、 Forestry 、 Tree (data structure)
摘要:
lens.org 参考文章(6)
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Jon R. Dewey, Plant watering and feeding device ,(1999)