TY  - RPRT
TI  - [Ludwig's technic. 1. Pre-functional impression].
AU  - F Grünewald
AU  - H Ludwigs
AU  - W Markiewicz
PY  - 1989
UR  - https://pubmed.ncbi.nlm.nih.gov/2701597/
ID  - 2701597
ER  -