This account is only for inquiries concerning defects due
to bad document content or processing.
To provide you with better service, it is necessary for you to include the
references (volume-entry) in your e-mail.
Since this is a highly technical subject matter, some
inquiries can only be attended to with the physical presence of a
professional topographer, since in many cases documentation must be provided.
We ask for the understanding of professionals in this matter.