reciclado de botellas plasticas

http://www.ryterdesign.ch/recycline/frame.htm
http://www.recicloteca.org.br/passo.asp
http://www.amarilloverdeyazul.com/tags/botellas-de-plastico/
http://www.ecologiablog.com/post/74/reutilizar-las-botellas-de-plastico
http://arteencasa-nauma.blogspot.com/2010/01/reutilizar-las-botellas-plasticas.html