Cleary, Brian P. 1959 Feet and puppies, thieves and guppies what are irregular plurals? Brian P Cleary - ed. - Minneapolis, MN Millbrook Press 2012 - 31 p. - Words Are CATegorical . - Words Are CATegorical . ISBN: 9781467726276 9781467726276 (pbk.) Dewey Class. No.: 428