Limestone concrete/

Eitemau Tebyg

• Limestone scenery [transparensi]
  Cyhoeddwyd: (1973)
• Limestones: their origins, distribution and uses /
  gan: 196318 North, Frederick John
  Cyhoeddwyd: (1930)
• The Environment : habitat, flora and fauna limestone environment [slaid]
  Cyhoeddwyd: (1978)
• Methods of sampling of lime and limestone products
  gan: 982 SIRIM
• Nature, origin and significance of the Tully limestone /
  gan: 386743 Heckel, Philip H.
  Cyhoeddwyd: (1973)