HAFEZ, M. B.2019-04-222019-04-221303-6017http://hdl.handle.net/20.500.12575/61810https://doi.org/10.1501/Commub_0000000266CHELATION STUDY OF PRASEODYMIUM, NEODYMIUM,SAMARIUM AND GADOLINIUM WITH TETRAET1IYLE.NEPENTAAMINEHEPTAACIT1C ACID307313