Hubbard Merton H., Phipps Robert R., Thompson Richard L., & United States Patent Office. Low density coffee roasting process.
Chicagoスタイル(17版)引用形式Hubbard Merton H., Phipps Robert R., Thompson Richard L., , United States Patent Office. Low Density Coffee Roasting Process.
MLA(9版)引用形式Hubbard Merton H., et al. Low Density Coffee Roasting Process.
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