Brattice-Window-Method for measuring leakage through mine stoppings

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: THIMONS, Edward D.
Hōputu: Pukapuka
Reo:Ingarihi
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Whakaahuatanga
Whakaahutanga tūemi:THIMONS, Edward D.: -- Brattice-Window-Method for measuring -- leakage through mine stoppings.1977 -- s.VINSON, Robert P.