cam a22 7 4500 114009392 CHVBK 20190128045317.0 711118s1971 xxu 00 eng| 78151702 0-8114-7731-2 978-0-8114-7731-4 (OCoLC)210058 (IDSBB)006017732 (OCoLC)210058 DLC SzZuIDS BS/BE A110 kids PZ10.S3713 Ec 574.5 580 15 Schlichting Harold E. Ecology the study of environment Harold E. Schlichting, Jr ; Mary Southworth Schlichting ; illustrated by Don Collins Austin, Tex. Steck-Vaughn 1971 48 p. ill. Text txt rdacontent/ger ohne Hilfsmittel zu benutzen n rdamedia/ger Band nc rdacarrier/ger An introduction to various aspects of ecology--ecosystems, the balance of nature, plant and animal interrelationships, man's effect upon the environment, and other topics Ecology Juvenile literature Ecology Schlichting Mary Southworth bo SzZuIDS BS/BE IDSBB 100 1- Schlichting Harold E. IDSBB 700 1- Schlichting Mary Southworth BK020000 XK020000 XK020000 IDSBB A154 A154 154FH BBG_7 13 REKATA1101209