TY - BOOK AU - Boys,C.V. TI - Soap-bubbles, their colours and the forces which mold them, being the substance of many lectures delivered to juvenile and popular audience with the addition of several new and original sections T2 - Dover books on science AV - QC183 B76 PY - 1959/// CY - New York PB - Dover KW - Burbujas de jabón KW - Tensión superficial ER -