MUIR, JOHN

Our National Parks / Muir, John . – reprinted edition .. – Boston ; New York : Houghton Mifflin Company, [2013?]. - 382 p., il., index , appendix; . . – [N. c.] – не указан : 5696 tg.

GROSS М. GRANT

Oceanography. A View of Earth [Text] / M. G. Gross . – 6th ed. .. – New Jersey : Prentice Hall, 1993. - 446 p., ill., appendix, glossary, index;– (Instructor's edition. . – References : IE 3-39 p. . – [n. c.] – 0-13-630757-4 (пер.) : 45 tg.

HOCK, PEGGY

Our Earth Keeping lt Clean / Hock, Peggy ... – USA : Children's Press, 2009. - 24 p. . . – 978-0-531-13832-8, 0-531-13832-1 : 100 tg.

HOCK, PEGGY

Our Earth Saving Energy / Hock, Peggy ... – USA : Children's Press, 2009. - 24 p.– (Scholastic News. . . – 978-0-531-13835-9, 0-531-13835-6 : 100 tg.

HOCK, PEGGY

Our Earth Making Less Trash / Hock, Peggy ... – USA : Children's Press, 2009. - 24 p.– (Scholastic News. . . – 978-0-531-13834-2, 0-531-13834-8 : 100 tg.

HOCK, PEGGY

Our Earth Saving Water / Hock, Peggy ... – USA : Children's Press, 2009. - 24 p.– (Scholastic News. . . – 978-0-531-13836-6, 0-531-13836-4 : 100 tg.

HOCK, PEGGY

Our Earth Clean Energy / Hock, Peggy ... – USA : Children's Press, 2009. - 24 p.– (Scholastic News. . . – 978-0531-13833-5, 0-531-13833-X : 100 tg.