Não informado. (1942). Plant science literature. U.S. Department of Agriculture, Bureau of Plant Industry.
Cita Chicago Style (17a ed.)Não informado. Plant Science Literature. Washington: U.S. Department of Agriculture, Bureau of Plant Industry, 1942.
Cita MLA (8a ed.)Não informado. Plant Science Literature. U.S. Department of Agriculture, Bureau of Plant Industry, 1942.
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