张晨东. 中美两国马里兰烟分级标准比较与分析*[J]. 云南农业大学学报(自然科学), 2006, 21(6): 770-774.
引用本文: 张晨东. 中美两国马里兰烟分级标准比较与分析*[J]. 云南农业大学学报(自然科学), 2006, 21(6): 770-774.
ZHANG Chen-dong. Comparative Analysis of Standard Grades for Maryland Tobacco in U S A and China[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2006, 21(6): 770-774.
Citation: ZHANG Chen-dong. Comparative Analysis of Standard Grades for Maryland Tobacco in U S A and China[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2006, 21(6): 770-774.

中美两国马里兰烟分级标准比较与分析*

Comparative Analysis of Standard Grades for Maryland Tobacco in U S A and China

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