TY  - GEN
AU  - Needham,J.G.
TI  - Natural history of the farm: A guide to the practical study of the sources of our living in wild nature
PY  - 1916///
CY  - Ithaca
KW  - Natural History
KW  - Farm
N1  - Part 1 : Gums and gum-resins
ER  -