共 50 条
- [33] The status of county teacher's institutes in Pennsylvania JOURNAL OF EDUCATIONAL RESEARCH, 1923, 7 (05): : 439 - 439
- [36] Observations on structures in the slates of Northampton County, Pennsylvania JOURNAL OF GEOLOGY, 1926, 34 (06): : 481 - 506
- [39] REAL ESTATE STATISTICS FOR ALLEGHENY COUNTY, PENNSYLVANIA JOURNAL OF LAND AND PUBLIC UTILITY ECONOMICS, 1936, 12 (04): : 436 - 436