| Online Catalog (Hokkaido University Library) | |
| Online Catalog (Multilingual) (Hokkaido University Library) | |
| NACSIS Webcat (Union catalog of Japanese Academic Libraries) | |
| Web opac (National Diet Library ,Japan) | |
| Waseda University Information Network System (WINE) (Waseda University Library) | |
| BOOK CONTENTS (Tokyo University Library) |
| Japan OPAC list | Covers OPACs available though Internet in Japan. |