Some insects of special interest from Florissant, Colorado and other points in the tertiaries of Colorado and Utah

2015-10-012015-10-011892http://hdl.handle.net/2346/6417958 p.application/pdfengGeological Survey (U.S.)ColoradoUtahInsectsSome insects of special interest from Florissant, Colorado and other points in the tertiaries of Colorado and UtahReportUnrestricted.