“Front Matter.” Retrieval of Materials with Water Separation Machines, by Sarah E. Peterson and Philip P. Betancourt, vol. 1, INSTAP Academic Press, Philadelphia, Pennsylvania, 2009, pp. i-iv, www.jstor.org/stable/j.ctt3fgvxx.1. Accessed 27 July 2021.
Peterson, S., & Betancourt, P. (2009). Front Matter. In Retrieval of Materials with Water Separation Machines (pp. I-Iv). Philadelphia, Pennsylvania: INSTAP Academic Press. Retrieved July 27, 2021, from http://www.jstor.org/stable/j.ctt3fgvxx.1
Peterson, Sarah E., and Philip P. Betancourt. "Front Matter." In Retrieval of Materials with Water Separation Machines, I-Iv. Philadelphia, Pennsylvania: INSTAP Academic Press, 2009. Accessed July 27, 2021. http://www.jstor.org/stable/j.ctt3fgvxx.1.
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