Stack of books isolated on the white background
Schlüsselwörter
background,
blank,
book,
book,
collection,
colours,
cover,
education,
expertise,
group,
hardcover,
heap,
isolated,
learning,
library,
literature,
nobody,
object,
open,
order,
page,
paper,
reading,
leather,
red,
research,
row,
school,
stack,
text,
textbook,
variation,
white,
wisdom
Deutsch
