Estimation of the demand for lenses in unifocal eyeglasses
Yu. Z. Rozenblyum, L. S. Urmakher, R. V. SamsonenkoVolume:
18
Language:
english
Pages:
9
DOI:
10.1007/bf00555548
Date:
July, 1984
File:
PDF, 382 KB
english, 1984