Bearded Man With Lamp As Einstein Formula Symbol Royalty-Free Stock Photography

Portrait of bearded senior man taking an old kerosene lamp

Bearded young businessman working in loft space at night. Coworker sits by the wooden table with lamp and office tools

Young bearded businessman sitting at wooden table with lamp in loft office at night. Project manager working process and typing te

Bearded coworker sits by the wooden table with lamp and using contemporary notebook. Businessman hold pen and analysing trends

Bearded young businessman in glasses sits by the wooden table with lamp and using contemporary mobile notebook in loft office at n

Portrait of bearded senior man with an old kerosene lamp