With so many good books available in the field of children's health, it is curious that anyone would choose to import for the American market a book ``conceived, edited, designed and produced'' in England and of such poor quality. Layout, format, diagrams, drawings, and cross-referencing are often confusing or inconsistent. Entry length bears no relation to seriousness: encephalitis gets seven lines; flat feet, three paragraphs. Medical terms and names of medications are used but not defined. Language is sometimes unnecessarily sexist (he, him). Lyme disease is not included, a glaring omission at a time of growing national concern. Reference collections would be better served by Boston Children's Hospital's The New Child Health Encyclopedia ( LJ 11/15/87) or The American Medical Association Family Medical Guide (Random, 1987. rev. ed.). Not recommended.-- Kathleen L. Atwood, Pomfret Sch. Lib., Ct.