TY - GEN AU - Fry, J.C AU - Day, M.J. TI - Release of genetically engineered and other micro - organisms T2 - Plant and microbial biotechnology research series , 2 SN - 0521417562 U1 - 576.15 PY - 1992/// CY - Cambridge PB - Cambridge U.P. KW - LIFE SCIENCE ER -