Analysis of the contigents of those who are ill for a long time and frequently

Alekhnovich, M.V.; Brzheskiĭ, V.C.; Kedyshko, N.M.

Sovetskoe Zdravookhranenie 1: 28-32

1979


ISSN/ISBN: 0038-5239
PMID: 155315
Document Number: 139860

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