| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 006 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 007 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 008 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 009 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 010 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 011 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1939, volume 006, issue 012 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 001 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 002 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 003 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 004 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 005 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 006 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 007 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 008 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 009 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 010 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 011 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1940, volume 007, issue 012 | | JournalIssue | | View |
| De Ingenieur in Nederlandsch-Indie, year 1941, volume 008, issue 001 | | JournalIssue | | View |