海量图书期刊资源，随时随地畅享阅读乐趣
The physical demands of riding in National Hunt racesE. A. Trowbridge; J. V. Cotterill; C. E. Crofts · 1995
The tensile strength of natural and chemically modified bovine pericardiumC. E. Crofts; E. A. Trowbridge · 1988