Proclamation No. 640, s. 1990 - Signed on September 5, 1990: Declaring the existence of a state of public calamity in certain areas of the country which were affected by two floods which closely followed one another due to typhoons "Heling" and "Iliang".

Signed on September 5, 1990: Declaring the existence of a state of public calamity in certain areas of the country which were affected by two floods which closely followed one another due to typhoons "Heling" and "Iliang".