DAVID G. SIMPSON |
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SCIENTIFIC MNEMONICSSpectral Colors“ROY G. BIV”Red Orange Yellow Green Blue Indigo Violet Stellar Spectral Classes“O Be A Fine Girl, Kiss Me (Right Now, Smack)!”O B A F G K M (R N S) Moh's Mineral Hardness Scale“The Girls Can Flirt And Other Queer Things Can Do.”Talc Gypsum Calcite Fluorite Apatite Orthoclase Quartz Topaz Corundum Diamond Geological Time Scale“Come On, See Daring Men Play Polo Today. Juveniles Can Play. Even Old Men Play Polo. Hurray!”
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