Institution, 8. B. S. Thermally insulated underground piping systems.
Chicago Style aipamenaInstitution, 8096 British Standards. Thermally Insulated Underground Piping Systems.
MLA aipamenaInstitution, 8096 British Standards. Thermally Insulated Underground Piping Systems.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.