TY  - BOOK
AU  - Heckman, Charles W
TI  - Encyclopedia of South American aquatic insects. Ephemeroptera : illustrated keys to known families, genera, and species in south America
SN  - 9781402007750
U1  - 595.7176098 HEC 
PY  - 2002///
CY  - Dordrecht ; Boston
PB  - Kluwer Academic Publishers
KW  - Mayflies -- South America -- Identification
N1  - Includes bibliographical references and index
ER  -