Estudos básicos e pesquisas especiais na região do Rio Gravataí
By: Agrar- und Hydrotechnik GmbH, Essen 1970/71.
Contributors: Rio Grande do Sul, Brazil (State). Secretaria das Obras Públicas.
Publisher: República Federativa do Brasil, Governo do Estado do Rio Grande do Sul, Secretaria das Obras Públicas
Published: 1971
Place of publication: [Porto Alegre]
Language: por; ger
Number of pages: 202
Subjects: Physical geography -- Brazil -- Gravataí River watershed.; Horticulture -- Brazil -- Gravataí River watershed.
Notes: Includes bibliographies.
"Elaborado no âmbito da ajuda técnica da República Federal da Alemanha."
Translated from the original German text by J. A. Lutzenberger.