“Preface.” Reducing the Cultivation of Opium Poppies in Southern Afghanistan, by Victoria A. Greenfield et al., RAND Corporation, Santa Monica, Calif., 2015, pp. iii-iv, www.jstor.org/stable/10.7249/j.ctt15sk868.2. Accessed 18 Jan. 2021.
Greenfield, V., Crane, K., Bond, C., Chandler, N., Luoto, J., & Oliker, O. (2015). Preface. In Reducing the Cultivation of Opium Poppies in Southern Afghanistan (pp. Iii-Iv). Santa Monica, Calif.: RAND Corporation. Retrieved January 18, 2021, from http://www.jstor.org/stable/10.7249/j.ctt15sk868.2
Greenfield, Victoria A., Keith Crane, Craig A. Bond, Nathan Chandler, Jill E. Luoto, and Olga Oliker. "Preface." In Reducing the Cultivation of Opium Poppies in Southern Afghanistan, Iii-Iv. Santa Monica, Calif.: RAND Corporation, 2015. Accessed January 18, 2021. http://www.jstor.org/stable/10.7249/j.ctt15sk868.2.
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