THE ESSENTIAL WORK IN TRAVEL MEDICINE -- NOW COMPLETELY UPDATED FOR 2018 As unprecedented numbers of travelers cross international borders each day, the need fo
This volume begins in the early centuries of the Common Era with the various groups of people who had settled in southern Africa. Stone Age foragers, farmers wi
Syntheses of the geology of major areas of the Earth's crust are increasingly needed in order that the features of, and the problems associated with, the secula
Almost three-quarters of South Africans in the late-1990s call themselves Christians. From colonial times, when missionaries embroiled themselves in frontier co