TY - BOOK AU - Pohl, Richard Walter TI - How to know the grasses: pictured-keys for determining the common and important American grasses with suggestions and aids for their study U1 - 584.90973 23 PY - 1954/// CY - Dubuque; Iowa PB - W.C. Brown Co KW - Grasses KW - United States N1 - Includes index ER -