Dennis, N. T. M., & Heppell, T. A. (1968). Vacuum system design. Chapman & Hall.
Chicago Style aipamenaDennis, N. T. M., and T. A. Heppell. Vacuum System Design. London: Chapman & Hall, 1968.
MLA aipamenaDennis, N. T. M., and T. A. Heppell. Vacuum System Design. Chapman & Hall, 1968.
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