TY - UNPB JF - uin walisongo N1 - Unpublished ID - repository23056 A1 - Wati Sukmawati, Wati TI - Development of items in Acid-Base Identification Experiments Using Natural Materials: Validity Test with Rasch Model Analysis AV - public UR - http://repository.uhamka.ac.id/id/eprint/23056/ ER -