A magazine is a publication, usually a periodical publication, which is printed or electronically published (sometimes referred to as an online magazine).
The National Library of Wales (Llyfrgell Genedlaethol Cymru), Aberystwyth, is the national legal deposit library of Wales and is one of the Welsh Government sponsored bodies.
R. P. Feynman, The Feynman Lectures on Physics, Vol.1, Chaps.1,2,&3.
The University of Wales Press (Gwasg Prifysgol Cymru) was founded in 1922 as a central service of the University of Wales.
Welsh (Cymraeg or y Gymraeg) is a member of the Brittonic branch of the Celtic languages.