DOI: https://doi.org/10.23887/jjpg.v6i2

Published: 2018-08-31

DOI: https://doi.org/10.23887/jjpg.v6i2.20683
DOI: https://doi.org/10.23887/jjpg.v6i2.20684
DOI: https://doi.org/10.23887/jjpg.v6i2.20685
DOI: https://doi.org/10.23887/jjpg.v6i2.20686
DOI: https://doi.org/10.23887/jjpg.v6i2.20687