TCVN 1691-1975 Welded joints Manuel are welding Main types and contructive elements《焊缝 手工电弧焊 主要类型和构造元件》.pdf

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TCVN 3131-1979 Styrax tonkinensis Soil and climate conditions for styrax tonkinensis forest planting《越南安息香 越南安息香林种植的土壤和气候条件》.pdf

TCVN 7377-2004 Soils quality pH value index in the soils of Vietnam《土质 越南土壤中的pH值指数》.pdf

TCVN 6064-1995 Information technology Vietnamese keyboard layouts for office systems《信息技术 办公系统越南键盘布局》.pdf

TCVN 5712-1999 Information technology 8 bit coded Vietnamese character set《信息技术 8位编码越南字符集》.pdf

TCVN 5697-1992 Information and documentation Abbreviations of Vietnamse words for bibliographic description《信息和文献 文献着录用越南词缩写》.pdf

TCVN 7373-2004 Soils quality Index values of total nitrogen content in the soils of Vietnam《土质 越南土壤中总氮含量的指数值》.pdf

TCVN 6909-2001 Information Technology 16-bit Coded Vietnamese Character Set《信息技术 16位编码越南字符集》.pdf

TCVN 7376-2004 Soils quality Index values of total organic carbon content in the soils of Vietnam《土质 越南土壤中总有机碳含量的指数值》.pdf

TCVN 7375-2004 Soils quality Index values of total potassium content in the soils of Vietnam《土质 越南土壤中总钾含量的指数值》.pdf

TCVN 7374-2004 Soils quality Index values of total phosphorus content in the soils of Vietnam《土质 越南土壤中总磷含量的指数值》.pdf

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