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020 _a0-8261-1640X
040 _bEnglish
082 _21
_a362.12
_bO54
100 _qAAbdel R. Omran
245 _aCommunity Medicine in Developing Countries
264 _aNew York
_bSpringer
_c1974
300 _c150
942 _2ddc
_cBK
999 _c31007
_d31007