DOI: 10.1055/s-00000148

Flugmedizin · Tropenmedizin · Reisemedizin - FTR

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References

PADI
2019 Worldwide Corporate Statistics.
Data for 2013-2018. Im Internet
www.padi.com/sites/default/files/documents/2019-02/2019%20PADI%20Worldwide%20Statistics.pdf

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