from the introduction:
This accessory contains a vast collection of one hundred and twenty eight creatures with statistics usable with the B/X, BECMI and RULES CYCLOPEDIA D&D game. You can convert them to whatever D&D, Labyrinth Lord, OSR version Role Play Game you like.
Entry Format: The Creature entries adhere to a standard format:
Creature Name: Armour Class; Hit dice; Movement Rates; Attack forms; Damage; Number Appearing; Save as; Morale; Intelligence; Experience Value [Description text]