TY - BOOK ED - United States TI - Employment and population changes: standard metropolitan statistical areas and central cities T2 - Special economic reports. Series ES20 (72)-1 AV - HB2175 .A53 U1 - 331.1/0973 PY - 1972///] CY - [Washington PB - For sale by the Supt. of Docs., U.S. Govt. Print. Off. KW - U.S. Population--Statistics KW - Local KW - Labor supply--U.S.--Statistics N1 - Cover title ER -