The new doublewing attack
Subtitle: featuring the revolutionary "at" blocking technique
By: [by] Robert Tierney [and] Cliff Gray.
Contributors: Gray, Cliff, 1927- joint author.
Publisher: Parker Pub. Co.
Published: 1971
Place of publication: West Nyack, N.Y
Language: eng
Number of pages: 191
Subjects: Football -- Offense.; Blocking (Football)