| 1 |  | How can the garbage problem be reduced? . - San Diego : Greenhaven Press , 1991. - 40 tr ; 23 cm Thông tin xếp giá: 360/A.000085 |
| 2 |  | What policies would help conserve global resources? . - San Diego : Greenhaven Press , 1991. - 38 tr ; 23 cm Thông tin xếp giá: 360/A.000086 |
| 3 |  | Are global resources becoming more scarce? . - San Diego : Greenhaven Press , 1991. - 36 tr ; 23 cm Thông tin xếp giá: 360/A.000087-000089 |
| 4 |  | How can sustainable agriculture be promoted? . - San Diego : Greenhaven Press , 1991. - 232 tr ; 23 cm Thông tin xếp giá: N/63/A.0000001-0000002 |
| 5 |  | Why does poverty disproportionately affect certain groups? . - San Diego : Greenhaven Press , 1994. - 187 tr ; 23 cm Thông tin xếp giá: N/3/A.000257 |
| 6 |  | Should the criminal justice system enforce crime victims' rights? . - San Diego : Greenhaven Press , 1993. - 33 tr ; 23 cm Thông tin xếp giá: 360/A.000108 |