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INVOICE NO. 3 23 Juno 1955 For services- **4l3#S66,6S CERTIFICATIONS (1) It Is hereby certified that thi3 is Invoice No. 2 applying to Subproject 43 of Project 12DLTHA, that perfor:\anco is satis- factory, that the services are being accomplished in accordance with mlual agreements, that a detailed agenda of the payments and receipts is cn file in TSS/CD, that this bill is ju3t and correct end that payment thereof has not yet been mads. Dates SIDNEY GOTTLIEB Chief, TSS/CD (2) It is hereby certified that this invoice applies to Sub- project 43 under Project IIXULTBA which v."jo duly approved and that the project is being carried out in accordance with the metaorandua dated 13 April 1933 froa the DC! to tho W/A, and the extension of this authority in subsequent memoranda. Date* Research Director c-t-