@book
{TN_libero_mab2,
author = {
Davis, Thomas Austin
},
title = {
Analytic geometry
a programmed text
},
publisher = {McGraw-Hill},
keywords = {
Geometry, Analytic Plane Programmed instruction
},
year = {1967},
address = {
New York [u.a.]
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}