Adelaide Unleaded Fuel
https://petrolspy.com.au/map/graph/adelaide

Tide Forecasts
https://www.tide-forecast.com/locations/AdelaideInnerHarbour-Australia/tides/latest

Dewey
https://en.wikipedia.org/wiki/Edward_R_Dewey
https://www.cyclesresearchinstitute.org/dewey.html

Merriman
https://www.stariq.com/Main/Astrologers/A0001003.HTM

Circular and Harmonic Motion
https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=148

Superposition and Chart Patterns
https://phet.colorado.edu/sims/html/fourier-making-waves/latest/fourier-making-waves_en.html

Resources
Merriman
https://www.mmacycles.com
https://www.mmacycles.com/books/

Internet Resources
https://www.investopedia.com/
https://en.wikipedia.org/