The sand and gravel resources of the country east and south-east of Darlington, Durham - Description of 1:25 000 sheet NZ 30 and 31
Gozzard, J.R.
The sand and gravel resources of the country east and south-east of Darlington, Durham - Description of 1:25 000 sheet NZ 30 and 31 - 1 - 81 - Exploration du Parc National Albert. Mission d'études vulcanologiques .
The sand and gravel resources of the country east and south-east of Darlington, Durham - Description of 1:25 000 sheet NZ 30 and 31 - 1 - 81 - Exploration du Parc National Albert. Mission d'études vulcanologiques .