by Ludvík Vaculík. Harper & Row, $6.95. Mr. Vaculik is a brilliant writer and also the type of malcontent romantic who asks questions about the state of the world. Inevitably, his work has been banned in his native Czechoslovakia. This novel, which must be highly autobiographical, represents a son’s memories of his childhood and particularly of his father, an honest, capable man whose support of socialism led to the disintegration of the family and the destruction of their beautiful native countryside. It is a sad book but also warm, funny, mischievous, and constantly surprising. Translated by Marion Sling.