| Database/Dates | Term: restoration ecology | Term: ecological restoraton | Term: environmental restoration | Keyword: restoration |
| GEOBASE 12/97-5/98 | *70 | *8 (36) | *26 (49) | -- |
| 1/90-11/97 | *84 (97) | *3 (4) | *1 (4) | (1,841) |
| Exp. Acad. 1989-4/98 | *99 | 0 | 0 | (4,868) |
| Agricola 1/98-3/98 | (4) | *3 (4) | (1) | -- |
| 1992-1997 | *13 (94) | *2 (20) | *2 (33) | -- |
| 1984-1991 | *5 (10) | (2) | (3) | (2,4909) 3 files |
| Life Sci. 1/96-3/98 | (14) | *2 (22) | *298 (303) | -- |
| 1993-1995 | (12) | *1 (28) | *325 (329) | -- |
| 1990-1992 | 0 | (44) | *119 (121) | -- |
| 1986-1989 | (26) | (24) | *12 (12) | (4,512) 4 files |
| BIOSIS 1991-1998 | *198 | *96 | *41 | (10,240) |
| ASFA 1997-3/98 | (2) | (2) | *102 (105) | -- |
| 1988-1996 | (15) | *1 (57) | *284 (337) | (2,901) 2 files |
| WRA 1/93-3/98 | (7) | *1 | *341 (387) | -- |
| 1967-1992 | *1 (6) | 0 | *38 (78) | (3,924) 2 files |
| GeoRef 1/96-6/98 | 0 | 0 | (178) | -- |
| 1986-1995 | 0 | 0 | (59) | -- |
| 1975-1985 | 0 | 0 | (1) | (2,377) 2 files |
| Compendex 1975-1998 | (12) | (18) | (154) | -- |
| 1990-1994 | (11) | (11) | (126) | -- |
| 1980-1989 | (1) | (4) | 0 | (7,196) 3 files |
| NTIS 1993-1998 | *2 (3) | (17) | (1291) | -- |
| 1964-1992 | (1) | (5) | (299) | (200) 2 files |
* indicates controlled vocabulary. ( ) indicates free-text.