Plant families, how to know them : pictured-keys for determining the families of nearly all of the members of the entire plant kingdom /

by Jaques, H. E. 1880-.
Published 1949

How to know the beetles : pictured-keys for identifying many of the beetles which are most frequently seen, with aids for their study and with other helpful features /

by Jaques, H. E. 1880-.
Published 1951

How to know the land birds : pictured-keys for determining all the land birds of the entire United States and Southern Canada, with maps showing their geographic distribution, and...

by Jaques, H. E. 1880-.
Published 1963

How to know the water birds : pictured-keys for determining the water birds of the United States and Canada, with map showing their geographic distribution, and with ohter helpful...

by Jaques, H. E. 1880-.
Published 1960

How to know the economic plants: an illustrated key for identifying the plants used by man for food and in other personal ways, with some essential facts about each plant /

by Jaques, H. E. 1880-.
Published 1958

How to know the insects : an illustrated key to the more common families of insects, with suggestions for collecting, mounting and studying them /

by Jaques, H. E. 1880-.
Published 1947

How to know the weeds /

by Wilkinson, Robert E., 1926-.
Published 1972

How to know the beetles /

by Arnett, Ross H.
Published 1980