TY - GEN AU - Buchler, M G AU - David, J M AU - Mattis, R L AU - Phillips, W E AU - Thurber, W R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.400-21 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Planar test structures for characterizing impurities in silicon: ER -