  The Phenomenon of multi-step Bose-Einstein condensation (BEC) of a finite
number of non-interacting bosons in anisotropic traps has been demonstrated by
studing the populations on eight subsets of states. The cusp in the specific
heat is found to be associated with the crossover between subsets of states
involving Bose functions $g_{n}(z)$ of different classes, as specified by their
behaviour at $z=1$. {PACS: 03.75.Fi, 05.30.-d, 64.60.-i}
