P. PhinyocheepI. M. TangMahidol University2018-02-272018-02-271994-12-01Journal of Chemical Education. Vol.71, No.5 (1994)002195842-s2.0-13244297311https://repository.li.mahidol.ac.th/handle/20.500.14594/9548Mahidol UniversityChemistrySocial SciencesThe modern student laboratory - Determination of the hole concentration (copper valency) in the high T<inf>c</inf> superconductors: A laboratory using the potentiometric titration methodArticleSCOPUS