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TitleDateType
51 569_1972_Weston Bourret to Pedro Sanchez MejoradaText
52 570_1972_Weston Bourret to Alfredo RodriquezText
53 571_1972_A. I. Rodriguez to Weston BourretText
54 572_1972_Weston Bourret to Alfredo RodriguezText
55 573_1972_A. I. Rodriguez to Weston BourretText
56 574_1972_Weston Bourret to A. I. RodriquezText
57 575_1972_Don M. Irvin to Hugh DouglasText
58 576_1972_Hugh Douglas to R. O. WheatonText
59 577_1972_Don M. Irvin to Hugh DouglasText
60 578_1972_R. O. Wheaton to Hugh DouglasText
61 579_1972_D. M. Irvin to Hugh DouglasText
62 580_1972_Hugh Douglas to J. K. AllenText
63 581_1972_Weston Bourret to William McBrideText
64 582_1972_Weston Bourret to B. R. Wapples Jr.Text
65 583_1972_Weston Bourret to E. C. DouglasText
66 584_1972_Clint E. Smith to Weston BourretText
67 585_1973_Weston Bourret to Jim H. HannanText
68 586_1973_Weston Bourret to Mexico FilesText
69 587_1945_Memorandum Regarding J. Wisner TorreonText
70 588_1952_Regulations Governing the Utilization of Iron Oxide OresText
71 589_1965_Arthur Andersen and Co. Memorandum For ClientsText
72 590_1971_Ing. Luis De La Pena Porths SpeechText
73 591_1971_English Translation of Abstract From Luis De La PenaText
74 592_Conditions That Affect Mining Exploration and Mining Production in MexicoText
75 593_Translation Chapter 9 Regulations of ArticleText
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