Now you see it - then you didn't!
Subtitle: the inter-Channel stop line (and an O.B.)
By: Derrick Warren
Series: SIAS survey -- no. 14
Publisher: Somerset Industrial Archaeological Society
Published: 2000
Place of publication: Taunton
Language: eng
Number of pages: 22
Subjects: World War, 1939-1945; Civil defense; History; British Fortification