Key to the Woody Plants of Mower County: In Southern Minnesota, in Their Winter Condition

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1895 - Shrubs - 5 pages
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Page 12 - ... significance of the work they are doing, while frequent examinations of work and of pupils will be indispensable. Experience has shown that a good allotment of the five weekly periods allowed for this work will be made by giving three of them to laboratory work, one to lecturing and one to quizzing. The study of a plant should consist of an examination of all its essential features ; such as its cell structure ; its mode of development ; its mode of reproduction ; in short, as much of its life-history...

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