00507nam a2200169 a 4500 20140412111319.0 000823s19uu xx 00 eng d ER Wh55 1972 Staudacher, Carol "When is a foot not a foot?" / by Carol Staudacher ; Art by Al Nielson. Palo Alto, CA : Behavioral Research Laboratories, 1972. 46 p. Sullivan Topic Series - Level 2 Measurement Math 104344 104344 0 0 0 EL EL ER 2000-08-23 Lib. Fund 0 ER Wh55 1972 E7382 2014-04-12 00:00:00 2014-04-12 BK