TY  - BOOK
AU  - Ambrose,J.D.
TI  - The sand and gravel resources of the country east of Colchester, Essex - Description of 1:25 000 resource sheet TM 02
T2  - Minerals, Rocks and Inorganic Materials. Monograph Series of Theoretical and Experimental Studies. Isotopes in geology
PY  - 1975///
CY  - London
PB  - Institute of Geological Sciences
ER  -