00383nam a22001217a 450000500170000000800410001702000180005805000220007610000330009824500740013126000300020530000260023520260316114807.0260316b        |||||||| |||| 00| 0 eng d  a9781402060359  aHQ 1237. B7b2007  aBrian Eric and Jaisson Marie  aThe descent of human sex ratio at birthcEric Brian and Maria Jaisson  aDordrechtbSpringerc2007  axix, p.225.:ill.bHbk