"When is a foot not a foot?" /
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
ER / Wh55 1972
"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
ER / Wh55 1972