ID - 135544046 TI - U.S. coal exports AU - Humphries, Marc AU - Library of Congress. PY - 2018 PB - [Washington, D.C.] : Congressional Research Service, DB - UniCat KW - Coal KW - Coal trade KW - Exports UR - https://www.unicat.be/uniCat?func=search&query=sysid:135544046 AB - ER -