Heliografi: Perbedaan antara revisi

* [https://books.google.com/books?id=Mc90ZgreC8QC An Improved Method in the Art of Signalling for Military & Scientific Purposes (1887)]. Accessed 1 June 2008.

 

[[Kategori:Seni grafis]]

[[Kategori:Proses pencetakan]]

 

{{fotografi-stub}}