| 
                         Approved without change  | 
                        Extension without change of a currently approved collection | 1978-12-01 | |
| 
                         Approved with change  | 
                        No material or nonsubstantive change to a currently approved collection | 1974-12-04 | |
| 
                         Approved without change  | 
                        Extension without change of a currently approved collection | 1974-11-26 |