AWWA standard for reduced-wall, resilient-seated gate valves for water supply service
American National Standards Institute., American Water Works Association년:
1999
판:
1st ed
출판사:
American Water Works Association
언어:
english
페이지:
36
시리즈:
AWWA C515
파일:
PDF, 1.60 MB
IPFS:
,
english, 1999