B.P.R.D.: Hollow Earth #1–3. Internal Numbering. B.P.R.D. #1–3. Date Published ... The story was later collected in the trade paperback B.P.R.D.: Hollow Earth & ...
Autres questions
Why did Hellboy quit BPRD?
Why was Hellboy summoned to earth?
When did Hellboy leave the BPRD?
Is Hellboy in BPRD?