I recomend searching "Metroid Prime Hunters walkthough" on Google, and then one of the options will take you to Neoseeker.com. That place has a number of walkthroughs, but when you click on the right one you will know it is the right one because there is a picture of a DS and inside the bottom screen it will say NDS Master. That one has a complete walkthrough of the entire game, and then at the end there is a complete walkthrough that shows you where and how to find them. The aouthor will tell you how to use the logbook.
Hope this helps!
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