TY - DATA AU - Ratner,Michael ED - Library of Congress. TI - 21st Century U.S. energy sources: a primer T2 - Report / Congressional Research Service PY - 2018///- CY - [Washington, D.C.] PB - Congressional Research Service KW - Power resources KW - United States KW - Energy policy KW - Government policy KW - Energy development N1 - The CRS report home page provides access to all versions published since 2018 in accordance with P.L. 115-141; CRDP Program record; Report includes bibliographical references UR - https://purl.fdlp.gov/GPO/gpo116351 ER -