Pratt and Mackenzie's Law of highways

Eitemau Tebyg

• Pratt and Mackenzie's Law of highways
  gan: Parrish, Harold
  Cyhoeddwyd: (1967)
• Pratt and Mackenzie's Law of highways - supplement
  gan: Parrish, Harold
  Cyhoeddwyd: (1967)
• The highways act 1980
  gan: Cross, Charles Sauvain, Stephen
  Cyhoeddwyd: (1981)
• The highway and the city
  gan: Mumford,Lewis
  Cyhoeddwyd: (1963)
• The highway and the city
  gan: Mumford, Lewis
  Cyhoeddwyd: (1964)