HC Deb 15 February 1961 vol 634 cc145-6W
37. Mr. Skeffington

asked the Civil Lord of the Admiralty what progress has been made in the preparation of the mirror for the Isaac Newton telescope.

of the index, others to changes by more than one point, and others again to the net change over various specified periods. It is, therefore, impossible to calculate the average result of a change of one point in the index.

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