Richly illustrated (150-200 illustrations) monograph series with technical descriptions based on the original technical manuals, which are also shown, along with contemp. in service images. Text completely bilingual English/German.
Exemplary excerpts from issue no. 6005:

Throughout illustrated with 150-200 illustrations
Author: Franz, Michael
Pages: 48
Language: Completly billingual English/German
Edition: 1
Year of publication: 2011
Dimensions: 29.5 x 21 x 0.3 cm
Binding: Paperback
Weight: 0.25 kg