| 000 | 00650nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 180413s9999 xx 000 0 und d | ||
| 100 | _aAhrens Donald L | ||
| 245 | 0 | _aConcrete And Concrete Masonary Donald L Ahrens | |
| 260 | _bSt. Paul: Hobar Publications 1976 | ||
| 440 | _aAmerican Society Of Lubrication Engineers Transactions V. 1. | ||
| 546 | _aEng | ||
| 690 | _aConstruction Industry - Employees - Training Of - Texas ; Concrete Masonry - Study And Teaching (Secondary) - Texas ; Bricklaying - Study And Teaching (Secondary) - Texas ; Vocational Education - Curricula - Texas ; Construction Occupations ; Safety ; Vocational Counseling/Training. | ||
| 999 |
_c30867 _d30867 |
||