Post 323419 (missing)
(Rhodium: "tube furnace", Stimulants)Post 226039 (https://www.thevespiary.org/talk/index.php?topic=9458.msg22603900#msg22603900)
(terbium: "Re: PAA -> P2P using lead acetate", Methods Discourse)Post 18563 (https://www.thevespiary.org/talk/index.php?topic=9067.msg1856300#msg1856300)
(Mastermind: "P2P", Methods Discourse)Patent US2108156 (http://l2.espacenet.com/dips/viewer?PN=US2108156&CY=gb&LG=en&DB=EPD)
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http://www.geocities.com/dritte123/PSPF.html (http://www.geocities.com/dritte123/PSPF.html)