TY  - GEN
AU  - williams,j.t.
AU  - Withers,Lyndsey A.
ED  - international Board for Plant Genetic Resources.
ED  - international Genetic Federation.
ED  - international union of biological science.
TI  - Crop genetic resources: : The Conservation of difficult material, Proceedings of an hiternational workshop held at the Nuiversity of Reading,UK 
SN  - 9290460689
AV  - SB123 .C8
U1  - 631.5/3 
PY  - 1975///
CY  - Paris, France
PB  - Cambridge University Press
KW  - Gene banks, Plant
KW  - Germplasm resources, Plant
KW  - Plants, Cultivated
N1  - Includes bibliographies and index
ER  -