LEAD: 

Steve Toltz's debut novel A Fraction of the Whole has been called a "politically incorrect diatribe about — for and against — religion, politics, relationships, sex, marriage, work, play, children, sleep, friends, art, labyrinths, schemes and dreams."  It is all that and one of the most delightfully bizarre comedic books of the decade. There are two central characters a father and son, Martin and Jasper.

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END CUE: "...by Bond Street Books."