000 12165 003 PGUSA 008 040401s2004||||xxu|||||s|||||000 | fin d 040 PGUSA fin 042 dc 100 1 Ervast, Pekka 245 10 Salatiedettä omin päin [electronic resource] / by Pekka Ervas 260 Project Gutenberg, 200 500 Project Gutenber 506 Freely available 516 Electronic tex 830 Project Gutenberg 1216 856 http://www.gutenberg.org/etext/1216 856 http://www.gutenberg.org/license Right