AWWA standard for ball valves 6 in. through 48 in
American National Standards Institute., American Water Works Associationسال:
1986
ناشر کتب:
American Water Works Association
زبان:
english
صفحات:
32
سیریز:
AWWA C507
فائل:
PDF, 444 KB
IPFS:
,
english, 1986