TY - RPRT A1 - Bijak, J. T1 - Migration assumptions in the UK national population projections: Methodology review Y1 - 2012 UR - http://www.ons.gov.uk/ons/guide-method/method-quality/specific/population-and-migration/population-projections/npp-migration-assumptions-methodology-review/index.html CY - Titchfield T3 - Commissioned report ER -