• § 31. Director of United States Geological Survey

• § 31a. Findings and purpose

• § 31b. Definitions

• § 31c. Geologic mapping program

• § 31d. Advisory committee

• § 31e. Geologic mapping program 5-year plan

• § 31f. National geologic map database

• § 31g. Biennial report

• § 31h. Authorization of appropriations

• § 31i. Report on resource research activities

• § 31j. Biological research activity of Survey; review and report by National Academy of Sciences

• § 31k. National Volcano Early Warning and Monitoring System

• § 31l. Earth Mapping Resources Initiative

• § 32. Acting Director

• § 33. Repealed.

• § 34. Scientific employees

• § 35. Repealed.

• § 36. Purchase of books

• § 36a. Acquisition of scientific or technical books, maps, etc., for library

• § 36b. Acquisition of lands or interests therein for use in gaging streams or underground water resources

• § 36c. Acceptance of contributions from public and private sources; cooperation with other agencies in prosecution of projects

• § 36d. Cooperative agreements

• § 37. Omitted

• § 38. Topographic surveys; marking elevations

• §§ 39, 40. Omitted

• § 41. Publications and reports; preparation and sale

• § 42. Distribution of maps and atlases, etc.

• § 42a. Use of receipts from sale of maps for map printing and distribution

• § 43. Copies to Senators, Representatives, and Delegates

• § 44. Sale of transfers or copies of data

• § 45. Production and sale of copies of photographs and records; disposition of receipts

• § 46. Omitted

• § 47. Repealed.

• § 48. Omitted

• § 49. Extension of cooperative work to Puerto Rico

• § 50. Survey’s share of cost of topographic mapping or water resources investigations carried on with States

• § 50-1. Funds for mappings and investigations considered intragovernmental funds

• § 50a. Working capital fund for United States Geological Survey

• § 50b. Recording of obligations against accounts receivable and crediting of amounts received; work involving cooperation with State, Territory, etc.

• § 50c. Payment of costs incidental to utilization of services of volunteers

• § 50d. Services of students or recent graduates

• § 50e. USGS energy and minerals research facility