@misc
{TN_libero_mab2,
author = {
Webb, Dean
},
title = {
The Philosophical Basis for the Study
},
publisher = {National Council of Teachers of Mathematics},
isbn = {0021-8251},
keywords = {
Education
,
Mathematics (miscellaneous)
},
year = {1971},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}