DVH International, Halliburton, & Schlumberger. (2000). Portable down hole camera system. [s.n].
Cita Chicago Style (17a ed.)DVH International, Halliburton, y Schlumberger. Portable Down Hole Camera System. [S.l.]: [s.n], 2000.
Cita MLA (8a ed.)DVH International, et al. Portable Down Hole Camera System. [s.n], 2000.
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