TY  - GENERIC
DO  - 10.20944/preprints202009.0320.v1
UR  - http://dx.doi.org/10.20944/preprints202009.0320.v1
TI  - Reciprocal Personal/Public Protection for COVID-19 with Mask Discriminating Mouth and Nose
T2  - Preprints
AU  - Yuan, Yijun
PY  - 2020
DA  - 2020/09/14
PB  - Preprints