PRINCIPAL FDS INC LARGECAP GROWTH FD CL MUTUAL FUNDS USMF - What does PRINCIPAL FDS INC LARGECAP GROWTH FD CL MUTUAL FUNDS USMF mean? - What does PRINCIPAL FDS INC LARGECAP GROWTH FD CL MUTUAL FUNDS USMF stand for? - PRINCIPAL FDS INC LARGECAP GROWTH FD CL MUTUAL FUNDS USMF meaning