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H. a Senn

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Stand Alone

The Canadian Field-Naturalist, 1953, Vol. 67 (Classic Reprint)
The Canadian Field-Naturalist, 1951, Vol. 65 (Classic Reprint)
The Canadian Field-Naturalist, 1948, Vol. 62 (Classic Reprint)
The Canadian Field-Naturalist, Vol. 57 January, 1943 (Classic Reprint)
The Canadian Field Naturalist, 1949, Vol. 63 (Classic Reprint)
The Canadian Field Naturalist, 1949, Vol. 63 (Classic Reprint)