Colyer, C. The Roman and medieval defences of the lower city. Lincoln: Lincoln Archaeological Trust, 1975 227-266 p.
Colyer, C. The Roman and medieval defences of the lower city. Lincoln: Lincoln Archaeological Trust, 1975 227-266 p.
Colyer, C. (1975) The Roman and medieval defences of the lower city, Lincoln: Lincoln Archaeological Trust 227-266 p.
Colyer, C. (1975). The Roman and medieval defences of the lower city. excavations at the Park, West Parade and Lucy Tower Stree. Lincoln: Lincoln Archaeological Trust, 227-266 p.
Colyer C. The Roman and medieval defences of the lower city: excavations at the Park, West Parade and Lucy Tower Stree. Lincoln: Lincoln Archaeological Trust; 1975. p. 227-266 p.
