Dan fei gong yi she ji shou ce. Xiao suan, xiao suan an / Hua gong bu hua gong she ji gong si zhu bian ; Hua gong bu di er she ji yuan deng bian xie
氮肥工艺设计手册. 硝酸、硝酸铵 / 化工部化工设计公司主编 ; 化工部第二设计院等编写