541,778 OMRAN A. R. /red./ Family formation patterns and health : further studies : an international collabora, tive study in Colombia, Egypt, Pakistan, and the Syrian Arab Republic / study coord, and ed. A, R. Omran, C. C. Standi ey, - Geneva : World Health Organization, 1981. - 464 s. : il,, wkr. ; 24 cm ISBN 92 4 156070 3