On the orbits described by bodies revolving in given planes round immoveable centres of forces.

Preface signed: W. Wilkinson.

Planes and personalities: a pot-pourri.

Mode of access: Internet.

A roadmap for the future : recommendations and guiding principles for Illinois Tollway decision-making /

"October 2010"--Cover.

Elementary and practical arithmetic on the inductive system, by analysis and synthesis : containing lucid demonstrations of the rules, arithmetical improvements, and curiosities, mensuration of planes and solids, philosophical problems ... /

Mode of access: Internet.

Welch's Improved American arithmetic : adapted to the currency of the United States : to which is added a concise treatise on the mensuration of planes and solids /

On cover: 1842.

Ideals of America; analyses of the guiding motives of contemporary American life by leaders in various fields of thought and action.

Can America's ideal be consciously shaped? by G. E. Hooker.--Ideals in politics, by F. D. Bramhall.--Ideals in law, by J. B. Winslow.--Ideals in labor, by J. P. Frey.--Ideals of science, by J. M. Coulter.--Ideals in education, by E. C. Moore.--Ideals in business, by A. E. Swanson.--Ideals in "society," by Elsie C. Parsons.--Ideals in music, by E. Dickinson.--Ideals in religion, by G. A. Coe.--Ideals in philosophy, by H. A. Overstreet.--Ideals in literature, by R. M. Lovett.--Human progress, by A. B. Pond.

Guiding principles for American voters; an introduction to the study of elementary Americanism,

Mode of access: Internet.

Guiding family spending /

"Other publications relating to family spending": p. 26.

Developing the self-guiding trail in the national forests.

Mode of access: Internet.

Colección de las leyes fundamentales que han regido en la República Mexicana, y de lo planes que han tenido el mismo caracter desde el año de 1821, hasta el de 1857.

Mode of access: Internet.

The guiding hand of God,

Mode of access: Internet.

Microscopic anatomy of the temporal bone; a photographic survey of serial sections of the temporal bone cut in the three routine planes of sectioning human specimens,

1971 ed. published under title: Surgical and microscopic anatomy of the temporal bone.

Medicare y usted, 1999 : plan original de Medicare y otros planes de salud de Medicare.

Issued also in English : Medicare & you.

More maximal arcs in Desarguesian projective planes and their geometric structure

In a previous paper R. Mathon gave a new construction method for maximal arcs in finite Desarguesian projective planes via closed sets of conics, as well as giving many new examples of maximal arcs. In the current paper, new classes of maximal arcs are constructed, and it is shown that every maximal arc so constructed gives rise to an infinite class of maximal arcs. Apart from when they are of Denniston type or dual hyperovals, closed sets of conics are shown to give maximal arcs that are not isomorphic to the known constructions. An easy characterisation of when a closed set of conics is of Denniston type is given. Results on the geometric structure of the maximal arcs and their duals are proved, as well as on elements of their collineation stabilisers.