The result of more than 20 years of research and collaboration by international butterfly experts, this book is the first comprehensive catalogue to the butterfly fauna of any major tropical region and, as such, provides a basic research tool for any worker with an interest in African butterflies. Covering 3593 recognised species in 300 genera, it deals with about 20% of the world butterfly fauna. Included are entries for all genus-group, species-group and infra-subspecific names applicable t...

Les plus grandes améliorations dans la puissance productive du travail, et la plus grande partie de l’habileté, de l’adresse,de l’intelligence avec laquelle il est dirigé ou appliqué, sont dues, à ce qu’il semble, à la division du travail.On se fera plus aisément une idée des effets de la division du travail sur l’industrie générale de la société, si l’on observecomment ces effets opèrent dans quelques manufactures particulières. On suppose communément que cette divisi...

Written by a highly respected team of authors brought together by the Society for the Study of Social Problems (SSSP), this book provides accessible insights into pressing social problems in the United States in the aftermath of the COVID-19 pandemic and proposes public policy responses for victims and justice, precarious populations, employment dilemmas and health and well-being.