Durr, William Kirtley, 1924- Discoveries / [electronic resource] / senior author, William K. Durr ; senior coordinating author, John J. Pikulski ; coordinating authors, Rita M. Bean ... [et al.] ; authors, Mary Lou Alsin ... [et al.].. — Boston : : Houghton Mifflin Co.,, c1989.. — 336 p. : : col. ill. ; 24 cm. - Houghton Mifflin reading. [Level] H.



ISBN: 0395436826 9780395436820

Subjects--Topical Terms:
Readers (Elementary)
Readers--1950-