The New York Times guide to reference materials original title: Who-what-when-where-how-why-made easy.
| Autor Principal: | |
|---|---|
| Formato: | Libro | 
| Publicado: | New York
          Warner Books
    
        c1979 | 
| Subjects: | 
| Autor Principal: | |
|---|---|
| Formato: | Libro | 
| Publicado: | New York
          Warner Books
    
        c1979 | 
| Subjects: |