Portrait of a University professor with blackboard on the background.
Palabras clave
teacher,
prof,
classroom,
university,
old,
education,
person,
people,
studying,
learning,
school,
portrait,
student,
senior,
elderly,
writing,
face,
retirement,
beard,
smiling,
thinking,
head,
formula,
degree,
goggles,
mathematic,
looking,
aged,
idea,
retired,
concept,
smart,
problem,
photogenic,
pensioner,
shirt,
grey,
ageing,
hair,
man,
blackboard,
grandfather,
success,
work,
board,
manager,
computer,
serious,
age
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