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The Lost Elements

In the mid-nineteenth century, chemists came to the conclusion that elements should be organized by their atomic weights. However, the atomic weights of various elements were calculated erroneously, a

ISBN10 : 0199383340 , ISBN13 : 9780199383344

Page Number : 531

Birth Control

Intended as a reference tool for college students, this book examines the origins of and controversies associated with birth control in the United States. * Contains 20 primary document excerpts divid

ISBN10 : 0313362548 , ISBN13 : 9780313362545

Page Number : 216