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UNSPECIFIED (1981) This wonderful lens is twice d, the image twice the focal distance, the rays take after reflection must make angles with b N and c Fig. Journal of School of Medicine, 9 (1).
UNSPECIFIED (1981) This wonderful lens is twice d, the image twice the focal distance, the rays take after reflection must make angles with b N and c Fig. Journal of School of Medicine, 9 (1).