The book, Harrier In Action (# 58) represents a pictorial study of the Hawker Siddeley Harrier close-support and reconnaissance Vertical / Short Takeoff and Landing (V/STOL) fighter aircraft.  The Harrier has the distinction of being the only truly successful V/STOL design of the many that came into being during the 1960s.  Although well known in military aviation circles, the Harrier became truly famous during the Falklands War in 1982 where it was used effectively against Argentina's military forces.  Later variants of the Harrier including the Sea Harrier FRS MK.1 and the United States Marine Corps' AV-8 C Harrier, which are still being flown today by the Royal Air Force, Royal Navy and the United States Marine Corps among others.  The major sections of "Harrier In Action (# 58)" are as follows: 1) Introduction; 2) The Tripartite Nine; 3) The Harrier; 4) Harrier GR. MK. 1; 5) Harrier GR. MK. 1A; 6) Harrier TMK.2 Two Seat Trainer; 7) Harrier TNK. 2A; 8) Harrier GR. MK. 3; 9) A Yank In The RAF; 10) Harrier TMK. 4; 11) United States Marine Corps Harriers; 12) The Harrier GR MK.3 Becomes the AV-8 A; 13) TAV-8 A Trainer; 14) Spanish VA. 1 Matador; 15) Sea Harrier FRS MK. 1; 16) McDonnell Douglas AV-8 B Harrier II and 17) AV-8 C Harrier.  In addition to an informative narrative, "Harrier In Action (# 58)" includes the following features: 1) Approximately 107 black and white photographs; 2) About 31 black and white illustrations; 3) 11 color illustrations; 4) 12 color side aircraft profile illustrations; 5) 1 three-view Harrier GR MK 1 black and white illustration with specifications; 6) 1 three-view Sea Harrier FRS MK 1 black and white illustration with specifications; 7) 1 three-view AV-8 B black and white illustration with specifications and 8) 3 color cover paintings.  This book is 50 pages and is in very good condition.  The author is Dan Linn with Don Greer (illustrations).  Edition published in 1982.