First editions are collector’s items costing hundreds of dollars. Second editions are rare and often out of print. Furthermore, a physical book is static.

Radar Cross Section (RCS) quantifies how detectable an object is by radar. It represents an effective area that would intercept and reradiate power back to the radar detector; larger RCS means easier detection. RCS depends on object size, shape, material, aspect angle, polarization, and radar wavelength.

: You can find a digital copy available for controlled borrowing at the Internet Archive .