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Congressman giving a speech
Conference, presentation or speech and public speaking man with microphone on stage for development seminar. Business, tradeshow and workshop with motivational speaker person in corporate auditorium
Retro photo of a young scientist making calculations on an adding machine. USSR, 50s of the twentieth century.
Low angle view at the serious young American politician looking away during his speech at the debates, standing behind the pedestal on a blue background with two American flags
Confident blond female delegate in eyeglasses and grey suit looking at audience during speech while sitting against foreign colleagues
Candidate for president with bi nose cracking speech bubbles. Lier making false promises. Contemporary art collage. Concept of elections day, politics, choice, freedom, human rights. Grainy effect
A handsome Asian senior adult businessman is giving a business presentation in a business meeting room.
Mature politician or activist pronounce speech from the tribune with microphones during press campaign in the conference hall. Press officer answers questions, gives interview for television or media.
Waist up portrait of African-American man speaking to microphone standing at podium on stage against red curtain, copy space
close up skilled asian senior male teacher is speaking in adult education class with slides on screen - students sitting on chair learning business communication skills
Unrecognizable coach at business seminar. Public speaking concept.
White young American politician answering the questions after the debates, standing behind the pedestal on a blue background
Mature doctor in white coat presenting his report at medical conference
Mature multiethnic male politician in eyeglasses and suit looking aside at his opponent while standing by platform and speaking in microphone
Black man, business seminar and speaking for presentation, teaching and discussion at work conference. African presenter, microphone and speech for networking workshop, idea pitch and education forum
Black and white Image taken in the 50s: Mid adult man sitting at a restaurant table looking away
USA politician giving a speech on a podium and smiling with flag in the background
business person is giving a public speech
Young African-American politician in a gray suit with a speech at the debates, standing behind the pedestal against the blue background, we see him from the waist up from the distance
Portrait of mature businessman in suit looking at camera while giving his speech at conference
Public speaker in a heated discussion
Presentation, black man or talking at conference for information, climate change or sustainability. Male researcher, representative or speaking at event for environment care, lecture or seminar intro
An empty podium awaits a politician.
Confident mature delegate looking at female opponent during speech at conference and describing her viewpoint about adopting new laws
Free Images: "bestof:SpaceBeadsSRM 021.jpg Ernest Ambler speaking at press conference for SRM 1960 National Institute of Standards and Technology National Institute of Standards and"
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Cobia (7152180729).jpg
Common Murres (5940478571).jpg
NIST Nobel Laureate Explains (5941059340).jpg
Laser Tracker (5940486369).jpg
Near-field Antenna Measurements (5941062964).jpg
Transition Edge X-ray Sensor (5884305363).jpg
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Multi-layered Mirror (5881388485).jpg
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Error Correction (5884515900).jpg
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Civil_Rights_March_on_Washington,_D.C._[Dr._Martin_Luther_King,_Jr._speaking.],_08/28/1963..gif
Civil_Rights_March_on_Washington,_D.C._[Dr._Martin_Luther_King,_Jr._speaking.],_08/28/1963.gif
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