tulipnight: PhoTones Works #6582 by PhoTones_TAKUMA on Flickr.
bmdchan: PhoTones Works #2463 by PhoTones_TAKUMA on Flickr.
h4ilstorm: PhoTones Works #4290 (by PhoTones_TAKUMA)
h4ilstorm: PhoTones Works #3204 (by PhoTones_TAKUMA)
h4ilstorm: PhoTones Works #5256 (by PhoTones_TAKUMA)
h4ilstorm: PhoTones Works #2118 (by PhoTones_TAKUMA)
90377: PhoTones Works #4047 by PhoTones_TAKUMA on Flickr.
anthrocentric: Making Color: When Two Red Photons Make A Blue
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