Laurentia Henrieta Permita Sari Purba and Natalia Fitriyani  (2023) SHORT COMMUNICATION: DAILY ACTIVITIES OF JAVAN LANGURS (TRACHYPITHECUS AURATUS) IN GEMBIRA LOKA ZOO, YOGYAKARTA, INDONESIA.  Biodiversitas Journal of Biological Diversity, 24 (10).  pp. 2085-4722.  ISSN 2085-4722