"c 01112 SERVICE-INDUSTRY AND HOUSEHOLD MACHINES MD=0.1E-36 " "c " "c " "c VACUUM CLEANERS . FLOOR , SHIPMENTS " "c ------------------------------------------- " "c " "c " "c NBER SERIES: 01112 " "c AREA COVERED: U.S. " "c UNITS: " " "c ANNUAL COVERAGE: NONE " "c QUARTERLY COVERAGE: 1919/1-1942/1 " "c MONTHLY COVERAGE: NONE " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE : 1919-1942 VACUUM CLEANERS MANUFACTURERS ASSOC. " "c " "c " "c NOTE: FILENAME CHANGED FROM A01112.DB to Q01112.DB AND " "c START AND END QUARTERS ADDED TO DATE MAY 10, 2001 " "c BY JROTH@NBER.ORG " "c ............................................................... "