February 13, 1979

US anthropologist Raymond Sidrys and archeologist Rainer Berger, in Nature magazine, hypothesize that long-mysterious collapse of classic Mayan civilization took place without any great decline in population, but because of collapse in class structure through which Maya artistocracy maintained its authority; link decline in erection of carved stone monuments called stelae, believed to have been important activity, to decline in civilization after 810 AD; illus (M)

Article on success of NYC Police Dept's Computer Assisted Terminal Criminal Hunt (CATCH) in capturing crime suspects in Bronx; computer project described; 1st Deputy Police Comr William J Devine comments (M)

3d article in series focuses on whether Mexs will develop their huge oil reserves as rapidly as rest of oil-thirsty world would like and whether Pres Carter will persuade Pres Lopez Portillo to do so when they meet in Mex City; advantages and disadvantages of potential huge oil reserves on Mex econ discussed; illus (L)

Khnomeini supporters seize Shah's Niavaran Palace and Imperial Guards base, Teheran; Khomeini appeals for end to violence as anarchy engulfs capital; 417 people reptdly are killed and 989 wounded on Feb 11; Gens Abdul Ali Badri, Biokrat Jafarian and Mohammed Amin Beglari have been killed; whereabouts of Bakhtiar remain uncertain; Bazargan names Mohammed Hashem Sabaghian, Andr Entezam and Ibrahim Yazdi as Deputy Prime Mins; names Maj Gen Mohammed Wali Qaranch chief of staff; illus; map (L)

Article on Lebost Wind Turbine, a vertical-axis, augmented turbine designed to generate heat rather than elec; prototype will be tested on top of bldg on East 9th St, NYC, and is expected to provide all bldg's hot water; Barry A Lebost, designer, comments; illus (M)