ionic crystal lattice white chalk drawing doodle
Palabras clave
school,
back to school,
chemistry,
crystal,
lattice,
education,
stationery,
write,
study,
office,
drawing,
blackboard,
painted,
teacher,
chalk,
board,
science,
doodle,
vignetting,
network,
connection,
atom,
business,
structure,
molecular,
molecular,
technology,
connect