TY - BOOK AU - Enger,Eldon D. AU - Bradley F. Smith TI - Envronmental science: a study of interrelationships AV - GE 105 E54 1992 CL7351 PY - 1992/// CY - Dubuque, IA PB - Wm. C. Brown KW - Environmental sciences KW - Study and teaching N1 - Includes appendices, references, glossary and index ER -