Mushroom growing arrangement
作者： Forrest G Thompson
DOI:
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lens.org 参考文章(4)
Andrew R Blackburn, Richard E Steele, Oliver M Tucker, Plant receptacle with provision for ventilating openings ,(1954)
Alland Maurice, Plant-propagating device ,(1928)
Sr Arthur J Dettmers, Propagating device for seeds, plants and cuttings ,(1954)
Gerard H Risacher, Portable electric greenhouse ,(1961)