During the 20th century, which organisation used the pseudonym 'P. O'Neill' to sign official statements?
Infared NIR Photons IR radiation I.R.A Infra-red light Near Infrared InfraRed About infrared Infrared sources Infra Red Infrared communication Infra-red radiation SWIR Infra-red Thermal infrared Infrared reflectography Near-infrared Infrared radiation Infra-red reflectography Line of light Infra red Calorific Rays Short-wavelength infrared Infrared rays 1300 nm Infra-Red Infrared Ray Infrared Radiation Infrared spectrum Calorific rays MWIR Infrared Rays 1550 nm IR-B IR-C LWIR IR-A Near infrared MIR photons Infrared Mid-infrared Long-wave infrared Infrared light
infra red light infra red infrared sources about infrared near infrared infrared radiation long wave infrared calorific rays infared 1300 nm infrared rays i r infrared ray ir infra red reflectography thermal infrared mir photons ir radiation ir b line of light mwir infrared reflectography infrared infrared communication swir infrared spectrum infra red radiation 1550 nm mid infrared infrared light short wavelength infrared nir photons lwir ir c
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I.R.A