@BOOK {NG:1996c, title = {Preservation of genetic resources by seed storage: IITA research guide, No. 52}, author = {Ng, N. Q. }, series = {IITA research guide, No. 52}, year = {1996}, month = {March}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {36p.}, }