Stack of colorful hardcover books arranged in a pyramid shape.
Schlüsselwörter
collection,
textbook,
group,
library,
paper,
stacked,
vintage,
crease,
cover,
book,
spine,
hardcover,
study,
page,
colours,
education,
cognition,
learning,
literature,
colourful,
pile,
reading,
classroom,
pyramid,
stack,
arrangement,
bound,
design,
object,
volume
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