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Educational Research Council of America ; Gary D. Day ... [et al.]
Houghton Mifflin c1976 Houghton Mifflin science program
: Teacher's Ed. , : Student's Ed.
Available at 1 libraries
Frederick A. Rasmussen, Paul Holobinko, Victor M. Showalter
Houghton Mifflin [1970, c1971] Life science investigations
Available at 21 libraries