ftp://ftp.padua.org/pub/NeXT/science/  direct

[DIR]unix/  direct  22787+ twin directories
[DIR]physics/  direct  387+ twin directories
[DIR]misc/  direct  65535+ twin directories
[DIR]medicine/  direct  151 twin directories
[DIR]math/  direct  14904+ twin directories
[DIR]libs/  direct  20649+ twin directories
[DIR]geography/  direct  5028+ twin directories
[DIR]ee/  direct  9738+ twin directories
[DIR]chemistry/  direct  173 twin directories
[DIR]astro/  direct  3071+ twin directories
[DIR]apps/  direct  65535+ twin directories