https://www.hachusa.com/
Hach Analytical and Laboratory Instruments - Practical measurement guidance for analytical and lab...
Hach supports analytical and laboratory instrument selection with documented calibration and application guidance.
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https://www.worldbank.org/en/programs/lsms/publication/land-area-measurement-in-household-surveys2
Land Area Measurement in Household Surveys: Empirical Evidence and Practical Guidance for Effective...
Food Data Collection in Household Consumption and Expenditure Surveys
https://www.gov.uk/government/news/phe-publishes-new-national-child-measurement-programme-guidance-for-2013-to-2014
PHE publishes new National Child Measurement Programme guidance for 2013 to 2014 - GOV.UK
The guidance published today (1 August) is for implementation in the 2013 to 2014 school year.