TY  - BOOK
AU  - Ambrose,J.D.
ED  - Her Majesty΄s Stationery Office
TI  - The sand and gravel resources of the country west of Colchester, Essex
T2  - Institute of Geological Sciences : Natural Environment Research Council. 74/6
SN  - 0118806718
U1  - 553.6271331 
PY  - 1974///.
CY  - London: 
PB  - Her Majesty's Stationery Office, 
KW  - Building materials
KW  - Essex county
N1  - Description of 1:25 000 resource sheet TL 92; Assessment of British sand and gravel resources No. 10; Conduct map: the sand & gravel resources of sheet TL 92 (west of colchester, Essex); Includes bibliographical references (p. 12-13)
ER  -