. Ecological investigations upon the germination and early growth of forest trees. Trees; Germination; Growth (Plants). 44 Richard H. Boerker The Effect of Soil Moisture upon Germination. Fig. I. The germination curves of Piiius Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Boerker, Richard Hans Douai, 1887-. Lincoln, Neb

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