The sand and gravel resources of the country around Bawtry, South Yorkshire - Description of 1:25 000 resource sheet SK 69
Clayton, A.R.
The sand and gravel resources of the country around Bawtry, South Yorkshire - Description of 1:25 000 resource sheet SK 69 - 1 - 87 - Le calcul pratique des poutres vierendeel .
The sand and gravel resources of the country around Bawtry, South Yorkshire - Description of 1:25 000 resource sheet SK 69 - 1 - 87 - Le calcul pratique des poutres vierendeel .