"c 01123 CRUDE PETROLEUM MD= 1E-37 " "c " "c " "c PETROLEUM WELLS COMPLETED , APPALACHIAN FIELD " "c ------------------------------------------- " "c " "c " "c NBER SERIES: 01123 " "c AREA COVERED: U.S. " "c UNITS: " " "c ANNUAL COVERAGE: NONE " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: 01/1929-12/1936 " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE: OIL AND GAZ JOURNAL,1902-38 " "c GEOLOGICAL SURVEY 1870-1902 " "c " "c NOTE:IN SOME OF THE YEARS , SOUTHERN OHIO WAS COUNTED " "c TWICE AND HAD TO BE SUBTRACTED OUT " "c ............................................................... "