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Francis Valk
4 books found
Books by Francis Valk
Lectures on the errors of refraction and their correction with glasses
Francis Valk
⏱ 4h 17m
Lectures on the errors of refraction and their correction with glasses
Francis Valk
1892
257 pp.
Strabismus, or squint, latent and fixed
Francis Valk
⏱ 2h 51m
Strabismus, or squint, latent and fixed
Francis Valk
1904
171 pp.
Lectures on the errors of refraction and their correction with glasses
Francis Valk
⏱ 4h 1m
Lectures on the errors of refraction and their correction with glasses
Francis Valk
1889
241 pp.
Lectures on the errors of refraction and their correction with glasses
Francis Valk
⏱ 4h 1m
Lectures on the errors of refraction and their correction with glasses
Francis Valk
1889
241 pp.