TY - BOOK ID - 136741073 TI - Methods of testing, rating and estimating the heating seasonal performance of heat pumps AU - Parken, Walter H. AU - Didion, David A. AU - Kelly, George E. AU - United States. PY - 1980 PB - Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:136741073 AB - ER -