TY - RPRT TI - Quantitative electron probe microanalysis : Proceedings of a seminar held at the National Bureau of Standards, Gaithersburg, Maryland, June 12-13, 1967 AU - Heinrich, K F J PY - 1968 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 298 DO - 10.6028/NBS.SP.298 ER -