audience lecture hall participating business conference event

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Audience in lecture hall participating at business conference event Royalty Free Stock Photo

Rear view of the hall with people listening to a lecture or participating in a business seminar. The audience listens attentively Royalty Free Stock Photo

Audience in lecture hall participating at business conference. Royalty Free Stock Photo

Audience in lecture hall participating at business conference event

Audience in lecture hall participating at business event. Royalty Free Stock Photo

Male speaker giving presentation in lecture hall at university workshop. Audience in conference hall. Rear view of unrecognized participant in audience. Scientific conference event.