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[[{intro:research.jpg?0x80|width: 30em}research|<-- research ]]
[[{intro:resources.jpg?0x80|width: 30em}resources|<-- resources ]]
[[{intro:timeline.jpg?0x80|width: 30em}timeline|<-- single page timeline]]
[[{intro:discuss.jpg?0x80|width: 30em}old preface|<-- old preface ]]
[[{intro:cards.jpg?0x80|width: 30em}p0rn|<-- vintage mtb p0rn ]]
[[{intro:wheel.jpg?0x80|width: 30em}prehist:start|<-- pre-history ]]

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