Stack of books
Palabras clave
book,
stack,
textbook,
many-coloured,
education,
book cover,
isolated,
no people,
white background,
copy space,
literature,
learning,
collection,
variation,
order,
set,
blue,
arrangement,
yellow,
red,
orange color,
magenta,
expertise,
purple,
closed,
color image
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