A Reference Guide to Latin American History - James D. Henderson, Helen Delpar, Alexander C. Henderson, Maurice Philip Brungardt, Richard N. Weldon - Google Books

http://books.google.de/books?id=e2F7c0wW7g4C&pg=PA220&dq=Petrobras+founded+1953+October&hl=de&ei=YnGnTNOzDcyOswaDtsCtDA&sa=X&oi=

An essential reference for comprehensive and detailed coverage of Latin American history, this book is divided into three parts: Part I, a descriptive chronology of key event from pre-Columbian times to the present; Part II, a thematic survey of topics,…