De Geheime Leer - Deel I
| Publisher | Theosophical University Press |
| Cover/Jacket Design by | Pieter Wetselaar |
| Copyright Holder (This Edition) | Theosophical University Press Agency |
| Format | Paperback |
| Language | Dutch |
| Location | Den Haag, Netherlands |
| This Edition Published | 1988 |
| Copyright | 1988 |
| First Printing | 1888 |
| Pages / Font | 752 pages |
| ISBN 10 | 9070328 24 0 |
| Nederlandse Uniforme Genre Indeling (NUGI) | 614 |
| Other | SISO 285 |
| Other | UDC 141.332 |
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