Fang zhi gong ye hui chen /
Huang, Jianquan.
Fang zhi gong ye hui chen / Huang Jianquan, Zheng Yansen zhu. - Di 1 ban. - Shanghai : Shanghai ke xue pu ji chu ban she, 1957. - 26 p. : ill. ; 26 cm. - Wei sheng zhi shi cong shu . - Wei sheng zhi shi cong shu (Shanghai ke xue pu ji chu ban she). .
c 62000151
Dust control.
TE221 / .H76
Fang zhi gong ye hui chen / Huang Jianquan, Zheng Yansen zhu. - Di 1 ban. - Shanghai : Shanghai ke xue pu ji chu ban she, 1957. - 26 p. : ill. ; 26 cm. - Wei sheng zhi shi cong shu . - Wei sheng zhi shi cong shu (Shanghai ke xue pu ji chu ban she). .
c 62000151
Dust control.
TE221 / .H76