Titlebook: Die Schaumabscheider als Konstruktionsteile chemischer Apparate; Ihre Bauart, Arbeits Hugo Schr?der Book 1918 Springer-Verlag Berlin Heidel

向外才掩飾

The Development Paradigm of Ecological Civilization,created before that. With industrialization—the new human social civilization form—industrial civilization emerged, developed, became mature, and gradually replaced the agricultural civilization of low productivity. People’s shared values, production and life patterns, social organization forms, and

安撫

Deceit