JRFES Visitors :
LICENSED :
This Journal is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Published by :
Physics Department
STKIP PGRI Sumatera Barat. Indonesia
JRFES Visitors :
LICENSED :
This Journal is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Published by :
Physics Department
STKIP PGRI Sumatera Barat. Indonesia