Hansbrough, J. R. (1936). The Tympanis canker of red pine. Yale University.
Chicago-čujuhus (17. p.)Hansbrough, John Raymond. The Tympanis Canker of Red Pine. New Heaven: Yale University, 1936.
MLA-čujuhus (9. p.)Hansbrough, John Raymond. The Tympanis Canker of Red Pine. Yale University, 1936.
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