TY - GEN AU - E J Parks AU - R Faltynek AU - F E Brinckman C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1987-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.87-3533 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1987 TI - Environmental factors and mechanisms controlling degradation of Tb(III) chelates: development of effective new Tb phosphors for postage stamp use: ER -