Coca, cocaine, and the Bolivian reality

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Ezekiel Gebissa

"Khat is a psychoactive shrub, produced and marketed in the province of Harerge, Ethiopia, and widely consumed throughout North East Africa. It is now easily available in the large cities of the West." "In the late nineteenth century the main cash crop of Harerge was coffee. Today khat is the fastest-growing and the most profitable regional industry, involving millions of farmers, traders and other service providers. This study examines why farming families shifted from cultivating coffee and food crops to growing khat." "Demographic, market and political factors facilitated the emergence of khat as Harerge's leading agricultural commodity. This development increased the scale of unofficial cross-border trade in consumer goods." "The study also explores the consequences of the new cash crop for the regional economy as a whole, for farmer-state relations, for the nature and balance of local social relations, as well as for Harerge's physical, socioeconomic and political landscapes."--BOOK JACKET.

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Derek S. Pugh and David J. Hickson

Summarises the work of experts to provide an overview of the theory and practice of organization management. This book covers the structure and national and international environments of organizations, management problems, managerial decision-making and influence, people problems, and organizational change and learning.

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John Hoffman

Amusing anecdotes about dumpster diving that at the same time invite the reader to take treasure finding in trash seriously.

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Charles K. Chui, Guanrong Chen

This book offers a self-contained, elementary and yet rigorous treatment of linear system theory and optimal control theory. Fundamental topics within this area are considered, first in the continuous-time and then in the discrete-time setting. Both time-varying and time-invariant cases are investigated. The approach is quite standard but a number of new results are also included, as are some brief applications. It provides a firm basis for further study and should be useful to all those interested in the rapidly developing subjects of systems engineering, optimal control theory and signal processing.