TY  - RPRT
TI  - Projector slides - preparation, construction and use.
AU  - I A Galer
PY  - 1976
DO  - 10.1016/0003-6870(76)90056-9
UR  - https://pubmed.ncbi.nlm.nih.gov/15677213/
ID  - 15677213
ER  -