Drucker explains that throughout history our traditional have been metals,glass,natural fibers and paper.
Drucker explains that throughout history our traditional have been metals,glass,natural fibers and paper.
德莱克解释说通观历史，我们的传统产业是钢铁、玻璃、天然纤维和纸。
Drucker explains that throughout history our traditional have been metals,glass,natural fibers and paper.
德莱克解释说通观历史，我们的传统产业是钢铁、玻璃、天然纤维和纸。