@book{Steiner+2025,
url = {https://doi.org/10.3790/9783428423675},
title = {Einführung in die Theorie der wirtschaftlichen Werbeleistung},
title = {},
author = {Helmut Steiner},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428423675},
isbn = {9783428423675},
year = {1971},
lastchecked = {2025}
}