1981. United States. Soil Conservation Service. Shows land use.; Part of title in Spanish.; Includes location map.; "December 1981 4-R-37726." 66 x 92 centimeters Scale 1:50,000. The Service (San Juan, P.R.).
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1981. United States. Soil Conservation Service. Shows land use.; Part of title in Spanish.; Includes location map.; "December 1981 4-R-36326." 66 x 91 centimeters Scale 1:50,000. The Service (San Juan, P.R.).
1981. United States. Soil Conservation Service. Shows land use.; Part of title in Spanish.; Includes location map.; "November 1981 4-R-36315." 92 x 122 centimeters Scale 1:50,000. The Service (San Juan, P.R.).