text: exchange of fire, which started at 1600 hours , another exchange of shots was heard being fired deep in Costa Rican territory, presumably between the Civil Guard of Costa Rica and unidentified persons. According to that same version, at no time / . . . A/40/737 s/17549 English Page 25 did troops of the Ssndinieta People’8 Army croee the San Juan river to operate in Costa Rican territory. Likewire, the Nicaraguan vereion state8 that on 1 June a group of civiliana appeared on the epot, carrying a flag of Coeta Rica, and proceeded to take up the corpsea on the hills. The group left afterward8 without going down to the plain. According to the Coeta Rican version, the same day, 1 June, a contingent of the Civil Guard appeared on the cite of the events to locate the ca8ualties and trke evidence. The CaEta Rican vereion further etatee that on 3 June when a new detachment of the Civil Guard, made up of 40 men, tried to retrieve the 8eCOnd of the corpmer of the civil guarda who had been killed on 31 May it met with mortar and machine gunfire from the Nicaraguan side. Thie laeted anywhere from 3 to 15 minutes, according to the testimony gathered, In a telephone convcreation between the Deputy Minister for Public Security of Costa Rica, Mr, Johnny Campoe, and the Chief of tha Fifth Military Region of Nicaragua, Comandantc Roberto Calder&, in roterence to the incident, the latter suggested the poesibflity that ehotn fired at a boat, which he eaid, was transporting five “contraen and was croeeing the San Juan river, could have hit the Costa Rican side. On-site inrpection During it8 on-cite inepuction, the Committee was able to obaerve eplintera, fragmnte and whole pieces of Soviet-made grenades, 82-mm mortar ehells and PG7 rocket6 in various places. 
analysis: The text appears to be a report on an incident involving an exchange of fire between Costa Rican and Nicaraguan forces, likely related to border disputes or conflicts between government forces and rebel groups. The text does not mention economic development, natural resources, or environmental issues. It also does not discuss education, employment, humanitarian aid, or culture. The report focuses on the military aspect of the incident, including the exchange of fire, casualties, and the collection of evidence.