Thực đơn
Rắn_đen_(pháo_hoa)Thực đơn
Rắn_đen_(pháo_hoa)Liên quan
Tài liệu tham khảo
WikiPedia: Rắn_đen_(pháo_hoa) http://chemistry.about.com/b/2011/05/12/pharoahs-s... http://chemistry.about.com/od/chemistryhowtoguide/... http://mailer.uwf.edu/listserv/wa.exe?A2=ind9707&L... https://web.archive.org/web/20060913101119/http://... https://commons.wikimedia.org/wiki/Category:Pharao...