Your standard response to people wanting help to import books in bulk is clear, but incomplete.
Firstly, you say "colon" but then specify semi-colon. Later, you specify the opposite for AUTHORS and TAGS fields. The first is ":" and the second is ";". Does this matter to Abook?
Secondly, you do not tell us that the import file MUST contain data for all fields, even if empty. eg ;""; must appear for empty fields, because the parser can only work with positional parameters in this case. (The parser could not know which fields were being omitted.)
richard.
You can make a csv export for 1 book only so you get the right syntax. It is the way easiest I known.
Near the import form you can see the instruction to create a csv import file.