@BOOK {KIM:1999, title = {Seed production of hybrid maize: IITA research guide, No. 59}, author = {Kim, S. K. and Kling, J. and Weber, G. }, series = {IITA research guide, No. 59.}, year = {1999}, month = {July}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, isbn = {978-131-117-7}, note = {35p.}, }