Helten, Randal, : Environment in the 21st century and new development patterns / edited by K. Matsushita, Institute for Global Environmental Strategies (IGES), Hayama, Kanagawa, Japan ; assistant editor, Randal Helten ; contributing authors, K. Bezanson [and fourteen others].
Helterbran, Valeri R. : Planning for learning : collaborative approaches to lesson design and review / Mary Renck Jalongo, Sue A. Rieg and Valeri R. Helterbran.
Helterhoff, George William. : Growth and manufacture of silk. Letter from the Secretary of the Treasury, transmitting the information required by a Resolution of the House of Representatives, of May 11, 1826, in relation to the growth and manufacture of silk, adapted to the different parts of the Union. February 7, 1828. Referred to the Committee on Agriculture. [electronic resource]
Heltman, Charles C. : Mineral law digest [electronic resource] : embracing a digest of decisions of the courts and of the Land Department, under the public mineral land laws, a brief manual of procedure, with forms, and a manual of mineral surveys and departmental regulations / by Horace F. Clark, Charles C. Heltman, Charles F. Consaul.
Helton, J. W. : Contributions to Operator Theory and its Applications [electronic resource] : Proceedings of the Conference on Operator Theory and Functional Analysis, Mesa, Arizona, June 11-14, 1987 / edited by I. Gohberg, J.W. Helton, L. Rodman.
Helton, J. William. : Current Trends in Operator Theory and its Applications [electronic resource] / edited by Joseph A. Ball, J. William Helton, Martin Klaus, Leiba Rodman.