DISSIDENTS GAIN IN OPPOSING PACT FOR MOZAMBIQUE
white Mozambicans, calling themselves Movement for Free Mozambique, and coalition of blacks, Natl Coalition Party, strengthen their hold on Lourenco Marques, Sept 9, as they continue demonstrations against independence agreement reached on Sept 7 by Portuguese Govt officials and Mozambique Liberation Front (Frelimo) members; Portuguese Army has made no effort to crush rebellion, but, has kept rebellion from spreading to other parts of Mozambique; reptdly killed number of dissidents when mob attempted to seize control of radio station in Beira; illus; Portuguese Pres Antonio de Spinola sends 2 mil officers to Lourenco Marques to hold meeting with dissidents; meeting lasts for about 10 hrs; both dissident groups say they accept idea of ind Mozambique under black majority govt, but reject idea of turning territory over to Frelimo without test of popular sentiment; accuse Portugal of not honoring pledge to consult people before giving away sovereignty; Dr Uria Simango, coalition party pres and former Frelimo official, says Frelimo does not represent all Mozambicans; Frelimo leader Samora Machel issues statement from Lusaka (Zambia) saying that new rebellion is work of 'band of thugs'; says Frelimo will not hesitate to start afresh guerrilla war (L)