Teaching science through conservation [by] Martha E. Munzer [and] Paul F. Brandwein. Munzer, Martha E. Brandwein, Paul Franz, 1912- joint author. Science Laboratory manuals. Natural resources. Q161 .M98 507.5 MUT Includes index. Bibliography: p. 421-447. New York, McGraw-Hill, 1960. 1960. 1960 Text xvii, 470 p. : eng McGraw-Hill series in education. Curriculum and methods in education