85 resultados para Eutrophication--Ontario.
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Cover title.
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"Serial no. 97-PPP."
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
The role of aquatic vascular plants in the eutrophication of selected lakes in western Massachusetts
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"A project supported under Section 100, Water resources research act of 1964 (p. L. 88-379."
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Title varies slightly.
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Title from caption.
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Mode of access: Internet.
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"Microcard edition" (2 cards. 8 x 13 cm) in pocket.
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Mode of access: Internet.
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In 4 parts, with appendices: I. Conclusions and recommendations.--II. Data regarding unemployment in Ontario.--III. Studies of representative women's employments.--IV. Evidence taken before the commission.--Appendices.
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"No. 259, 309, 334, 411, 413."
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Report for 1915 includes also "Report for 1914 covering organization of the Workmen's Compensation Board."
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Mode of access: Internet.