RT Journal Article SR Electronic T1 Amniotic Fluid Studies by Isotope Dilution and Scanning JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 629 OP 632 VO 7 IS 8 A1 Richard P. Spencer A1 Gerald Fishbone A1 Clarence D. Davis YR 1966 UL http://jnm.snmjournals.org/content/7/8/629.abstract AB