TY - BOOK AU - Bosch, Robert Van den TI - Biological control SN - 0700202307 U1 - 632.96 21st ed. PY - 1973/// CY - New York PB - International Textbook Company Limited KW - Insect pets-Biological control KW - Pests-Biological control KW - Biological control systems N1 - Index: 170-10 ER -