21 chain and washer pumps :
21 chain and washer pumps : from the 1958 Peking Agricultural exhibition /
compiled by Simon Watt.
- London : Intermediate Technology Publictions Ltd, 1976.
- 49 p. : ill. ; 22 cm.
Open access.
0903031264
77369415
Pumping machinery--Exhibitions.
Agricultural exhibition, Peking, 1958.
Open access.
0903031264
77369415
Pumping machinery--Exhibitions.
Agricultural exhibition, Peking, 1958.