Open Book of Handwritten Calculations
Palabras clave
book,
open,
vintage,
handwritten,
calculation,
diagram,
mathematic,
page,
old,
paper,
note,
number,
symbol,
line,
circle,
ink,
crayons,
science,
mathematic,
research,
study,
education,
cognition,
history,
archive,
document,
text,
writing,
script,
datum,
analysis,
formula,
equation,
figure,
graphic,
illustration,
vignetting,
drawing,
draft,
design
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