Machen : Fungi & Industry Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Machen: Fungi & Plant/tree Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Machen: Industry & Geology Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Machen Place Math Eitemau Uwchlwytho gan Llyfrgell Genedlaethol Cymru / The National Library of Wales
