State of world population 1999 6 billion : a time for choices
| Other Authors: | |
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | New York
          United Nations Population Fund
    
        1999. | 
| Subjects: | 
| Other Authors: | |
|---|---|
| Format: | Book | 
| Language: | English | 
| Published: | New York
          United Nations Population Fund
    
        1999. | 
| Subjects: |