TY - BOOK AU - Gordon, J. C TI - Planning research : a concise guide for the environmental and natural resource sciences SN - 9780300120066 U1 - 363.70072 GOR PY - 2007/// CY - New Haven PB - Yale University Press KW - Environmental sciences - Experiments KW - Environmental sciences - Research N1 - Includes bibliographical references (p. 91-94) and index ER -