Keywords: Wikipedia Takemoto polymer thiourea.png en wikipedia 2011 July 7 Takemoto polymer bound thiourea en wikipedia Ronhjones CommonsHelper 2007-05-23 Mike Kotke wikipedia en Mike Kotke Original upload log page en wikipedia Wikipedia_Takemoto_polymer_thiourea png 2007-05-23 17 38 Mike Kotke 429×93× 2690 bytes <nowiki>Takemoto polymer bound thiourea</nowiki> Catalysis Carbamides |