TY - BOOK AU - Prescott,G.W TI - How to Know the fresh - water algae: an illustrated key for identifying the more common fresh-water algae to genus, with hundreds of species named and picture and with numerous aids for their study T2 - Picture key nature series U1 - 589.3 PY - 1954/// CY - Dubuque, Iowa PB - Wm. C. Brown KW - ALGAS DE AGUA DULCE KW - CLAVE DE IDENTIFICACION ER -