ARTICLE
|
doi:10.20944/preprints202304.0200.v1
Subject:
Public Health And Healthcare,
Public Health And Health Services
Keywords:
hesitancy; Guatemala; agricultural worker; COVID-10; SARS-CoV-2; access
Online: 11 April 2023 (05:24:35 CEST)
ARTICLE
|
doi:10.20944/preprints201707.0086.v1
Subject:
Chemistry And Materials Science,
Analytical Chemistry
Keywords:
Caffeine, Uncertainty calculation; ISO 17025, Guatemala coffee grains; GC-FID
Online: 28 July 2017 (13:05:43 CEST)