Wa tu qi zhong ji
By: Shanxi sheng jian zhu gong cheng ju "Wa tu qi zhong ji" bian xie zu
Series: Jian zhu ji xie gong ren ji shu xue xi cong shu
Publisher: Zhongguo jian zhu  gong ye chu ban she
Published: 1974
Place of publication: Beijing
Language: chi
Number of pages: 175
Subjects: Excavating machinery; Cranes, derricks