6. Example of a two-page field data sheet to record sampling information during collection of quantitative phytoplankton samples
7. Example of the 16-character sample identification code used by the National Water-Quality Assessment Program
8. Example of a field sample log that lists collection and disposition data for samples collected
Table 1. Abbreviations of study-unit names used in the 16-character sample identification codes
CONVERSION FACTORS AND ABBREVIATIONS
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