URL: https://www.walz.com/files/downloads/manuals/diving-pam/DIVING3EB.pdf

Citation Style: 
APA
Citation Text: 
Heinz Walz, G. (1998) UNDERWATER FLUOROMETER submersible photosynthesis yield analyzer handbook of operation, 1st ed. Effeltrich. Accessed May 2nd, 2023 from https://www.walz.com/files/downloads/manuals/diving-pam/DIVING3EB.pdf
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URL
Identifier Value: 
https://www.walz.com/files/downloads/manuals/diving-pam/DIVING3EB.pdf
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Publication