RT Journal Article SR Electronic T1 Gel Chromatography in the Analysis of 99mTc Radiopharmaceuticals JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 318 OP 319 VO 15 IS 4 A1 Steigman, J. A1 Williams, H. P. A1 Richards, P. A1 Lebowitz, E. A1 Meinken, G. YR 1974 UL http://jnm.snmjournals.org/content/15/4/318.abstract AB