apa banget deh gypsum susah d cari zzz 
nyari ap neng?
laurarirurero
says
gypsum ga ada ey mang 
apaan gypsum?? 
laurarirurero
says
hahaha itulooo plajaran geooooo sayang
ya apaan??
laurarirurero
says
bahan non mineral sayang
ah ga ngerti. hehe