Tables of two-dimensional oscillating airfoil coefficients for rotary wings.

Mode of access: Internet.

Railway expansion in Latin America; descriptive and narrative history of the railroad systems of Argentina, Peru, Venezuela, Brazil, Chile, Bolivia and all other countries of South and Central America.

Plates printed on both sides.

The British empire in the nineteenth century; its progress and expansion at home and abroad, comprising a description and history of the British colonies and dependencies.

Mode of access: Internet.

Simplified techniques for determination of theoretical and effective self-purification coefficients of polluted streams /

Mode of access: Internet.