Cefn Coed, Merthyr Tydfil: Plant/tree & Tolypella Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Glamorganshire Canal, Forest Farm, Cardiff: Plant/tree & Seaweed/Algae Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
