“PROTECTION.” Birds in the Garden and How to Attract Them, by Margaret McKenny and CLYDE FISHER, NED - New edition ed., University of Minnesota Press, Minneapolis, 1939, pp. 70–77, www.jstor.org/stable/10.5749/j.ctttt869.12. Accessed 11 Aug. 2020.
McKenny, M., & FISHER, C. (1939). PROTECTION. In Birds in the Garden and How to Attract them (pp. 70-77). Minneapolis: University of Minnesota Press. Retrieved August 11, 2020, from www.jstor.org/stable/10.5749/j.ctttt869.12
McKenny, Margaret, and CLYDE FISHER. "PROTECTION." In Birds in the Garden and How to Attract Them, 70-77. Minneapolis: University of Minnesota Press, 1939. Accessed August 11, 2020. www.jstor.org/stable/10.5749/j.ctttt869.12.
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