. "Time Slave is a 1975 hybrid of historical fiction and science fiction by John Norman. In this book, Norman presents his personal theories of human evolution, exemplified by the case of a modern woman sent back in time twenty thousand years or more; he mourns the loss of human evolutionary fitness and distortion of \"natural\" social relations which in his view occurred when farming spread, and farmers squeezed hunter/gatherers to the ecological margins."@en . . "Time Slave"@en . . . "978-0-7592-9778-4" . "380"^^ . . "1942479" .