I have the book now, and it is indeed a softcover, similar in format to all its predecessors. Including the covers and the introduction (whose pages are lettered), it totals 244 pages.
One weakness of the Ginter books has always been a lack of table of contents or index. To give some idea of the book's scope, here are the chapters and their start pages:
1 - B-50A (page 1)
2 - B-50B, RB-50B, YB-50C, B/RB-54A and XB-55 (page 83)
3 - B-50D and WB-50D (page 123)
4 - KB-50, KB-50J and KB-50K (page 172)
5 - Test and Research & Development Aircraft (page 197)
6 - TB-50A, TB-50D and TB-50H (page 205)
The inside back cover has reviews of the Academy 1/72 B-50D and RB-50G kits.
If you're wondering, coverage of the YB-50C, B-54A and XB-55 amounts to about 4 pages, describing the VDT engine concept and showing artist's conceptions and mockups. The XB-55 turboprop was really an unrelated aircraft, but the YB-50C mockups were used to test components intended for the XB-55. No comparisons to comparable Soviet aircraft are included.
