TY  - RPRT
TI  - [From tutorial teaching to long-distance learning].
AU  - Alejandro Cravioto
AU  - Roberto Kretschmer
AU  - José Narro-Robles
AU  - Octavio Rivero-Serrano
UR  - https://pubmed.ncbi.nlm.nih.gov/15022887/
ID  - 15022887
ER  -