TY - BOOK AU - Callow, J A TI - Biotechnology and plant genetic resources : Conservation and use SN - 0851991424 U1 - 573.6:581 PY - 1997/// CY - UK PB - CAB International KW - Biodiversity KW - DNA conservation KW - Genetic diversity KW - Germplasm resources KW - In vitro conservation ER -