The book, Polikarpov Fighters In Action Pt. 2 (# 162) represents a pictorial study of the many Polikarpov I-16 variants developed by Nikolai Nikolayevich Polikarpov and produced in the Soviet Union between 1934 and 1943.  When first introduced, the nimble Polikarpov I-16 was the world's first cantilever-winged monoplane fighter with retractable landing gear.  While the I-16 had a top speed of 276.5 mph, the American P-26 Peashooter was some 50 mph slower.  The I-16 also possessed superior clime rate and maneuverability as compared to contemporary fighters of the era.  When the I -16 was introduced to actual combat in both Spain and China in the mid to late 1930s it initially dominated aerial combat.  This dominance was not to last.  By latter part of the Spanish Civil War the German Luftwaffe had introduced the Messerschmitt Bf-109 B and E  models, which were superior in every respect to the I-16.  Later border conflicts between Japanese occupied China and the Soviet Union highlighted the superior performance of the Japan's new Mitsubishi Zero fighter.  Despite being essentially obsolete by the time Germany invaded the Soviet Union on June 22, 1941, the I-16 soldiered on trying as best it could to hold back the German invasion.  As World War II progressed, the Soviets came up with much more modern LaGG, MiG and Yak fighters that could more than hold their own against the German Luftwaffe.  The major sections of "Polikarpov Fighters In Action Pt.2 (# 162)" are as follows: 1) Acknowledgements; 2) Dedication; 3) Introduction; 4) TsKB-12 and TsKB-12 bis Prototypes; 5) I-16 Type 4; 6) TsKB-18; 7) Zveno I-16 Type 4; 8) TsKB-12 bis Prototype (Modified); 9) I-16 Type 5; 10) Ski-Landing Gear; 11) Ground-Attack I-16 Type 5; 12) TsKB-29; 13) I-16 P (Cannon); 14) Zveno I-16 Type 5; 15) Spanish I-16 Type 5s; 16) Chinese I-16 Type 5s; 17) I-16 Type 6; 18) Spanish I-16 Type 6; 19) Chinese I-16 Type 6; 20) Finnish I-16 Type 6; 21) I-16 Type 10; 22) TsKB-12 P; 23) I-16 TK; 24) I-16 Type 20; 25) Spanish I-16 Type 10; 26) Chinese I-16 Type 10; 27) Spanish Built I-16 Type 10; 28) I-16 Type 17; 29) I-16 Type 18; 30) Finnish I-16 Type 18; 31) I-16 Type 24; 32) I-16 Type 27; 33) I-16 Type 29; 34) Romanian I-16 Type 29; 35) Two Seat Trainers UTI-2 Trainer; 36) UTI-4 Trainer; 37) Spanish UTI-4; 38) Chinese Jung-28 A; 39) Finnish UTI-4; 40) German UTI-4 and 41) Polish UTI-4.  In addition to an informative narrative, "Polikarpov Fighters In Action Pt.2 (# 162)" includes the following features: 1) Approximately 108 black and white vintage photographs; 2) About 35 black and white illustrations; 3) 2 color illustrations; 4) 10 color side aircraft profile illustrations; 5) 1 three-view Polikarpov I-16 Type 5 black and white illustration with specifications; 6) 1 three-view Polikarpov I-16 Type 24 black and white illustration with specifications and 7) 3 color cover paintings.  This book is 50 pages and is in like-new condition.  The author is Hans-Heiri Stapfer and Don Greer (colorist) with Joe Sewell & Ernesto Cumpian (illustrations).  Edition published in 1996.