TY - JOUR AU - Roberson, S AU - Marinenko, Ryna AU - Small, J AU - Blackburn, Douglas AU - Kauffman, D AU - Leigh, Stefan C2 - Microbeam Analysis DA - 1995-08-06 LA - en PB - Microbeam Analysis PY - 1995 TI - Certification of K-411 glass microspheres with electron probe microanalysis ER -