N.A.P.B.L. Umpire Manual
Edition: Rev Upd Su edition
Publisher: Triumph Books
Published: February 1998
Language: eng
Format: Paperback
Number of pages: 99
ISBN-13: 9781572432598
Subjects: Sports & Recreation; Baseball; Sports Officiating; Sports; Baseball - General; Reference
First sentence: All players shall wear a double ear-flap helmet while at bat.