bulletinproceed00nati described at URL: https://archive.org/download/bulletinproceed00nati/bulletinproceed00nati.pdf determination method or standard: SHA-1...
Archive Internet Archive ID: natureprintedbri02john described at URL: https://archive.org/download/natureprintedbri02john/natureprintedbri02john.pdf...
Internet Archive ID: smithsonianmisce201881smith described at URL: https://archive.org/download/smithsonianmisce201881smith/smithsonianmisce201881smith.pdf...