Gaya APA
Owston, C.N.. (1976).
The use of plastics for non-pressure pipes underground .
:
TRRL.
Gaya Chicago
Owston, C.N..
The use of plastics for non-pressure pipes underground.
:
TRRL,
1976.
Text.
Gaya MLA
Owston, C.N..
The use of plastics for non-pressure pipes underground.
:
TRRL,
1976.
Text.
Gaya Turabian
Owston, C.N..
The use of plastics for non-pressure pipes underground.
:
TRRL,
1976.
Print.