00561cam a22001574a 4500 9781506341569 (pbk) 300.7 DEV DeVellis, Robert F. Scale development theory and applications Los Angeles Sage Publications, Inc. 2017 xvii, 262 p. : ill. ; 23 cm. Includes index and references Social sciences Scaling Scale development Research context Factor analysis Latent variable Measurement Variables Validity FSS BK 0 0 0 0 GGL GGL 2018-11-08 Pak book cooperation 5960.42 1 300.72 DEV 37886 2023-03-06 00:00:00 2023-02-18 1 BK 23597 23597