Peter, Thank you! First time I've heard of this publication. That is about $90US with the exchange what it is now.
My list is similar to yours. Though I don't have the Landman or Sciaguato~yet!
Strack's PEARLS is at the top, of course. Seems like I look up something at least twice a week.
Renee Newman's PEARL BUYING GUIDE I often recommend as it's concise and fun with many photos of pearls belonging to P-G members, oh, and reasonable cost @ $20 or so.
Kunz and Stevenson, The Book of the PEARL paperback
Following books are educational and have fab photos, more the coffee table type, likely you have some or all of these, too.
Chadour-Samson with Bari, PEARLS Victoria & Albert Museum exhibit
Loring, TIFFANY PEARLS
Hackney and Edkins, PEOPLE & PEARLS
Malaguzzi, THE PEARL
Yes, please, everyone share your favorites!