Log Category of Documents:
Circular, "23/H2, dated 23 Jul 67, signed by Ngoc Tân, Chief of the Chemical Sec of the Southern Sub-Region MR V, addressed to subordinate Units and Agencies, prescribes regulations on the use of funds allotted to purchase material needed for the preparation of chemical masks. Document describes the composition of a chemical mask and how to use these protective masks. Each unit is entitled to an advance of 14,000$ to procure materials.