A little scientific problem-solving — and a lot of princess power — will make the sixth entry in the New York Times best-selling series a smash hit. It's mayhem at the science fair! A squishy goo monster is a challenge for the Princess in Black — but luckily some science-loving princesses are on hand to help.
- Book Cover Type: Paperback
- Language(s): Persian (Farsi)
- ISBN : 9786004625135
- Persian Title: کتاب شاهزاده سیاه پوش 6 هیولای ژله ای اثر شنون هیل و دین هیل
