Directions for collecting and preserving insects
McDunnough, J.H.
Directions for collecting and preserving insects - Ottawa 1919 - 1-14 p. - Collecting, Preserving, Insect Canada Department of Agriculture. Circular No. 12 .
Directions for collecting and preserving insects - Ottawa 1919 - 1-14 p. - Collecting, Preserving, Insect Canada Department of Agriculture. Circular No. 12 .