TY - GEN AU - Richard Geyer C2 - Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD DA - 1990-04-01 LA - en M1 - 1338 PB - Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD PY - 1990 TI - Dielectric Characterization and Reference Materials ER -