Энэ нь Book Таны хэл дээр байхгүй байгаа, Нь харах: English (en),
Эсвэл Google Translate ашиглах:  

Erosion and pollution problems exist in every country, and each country has its own approach to managing and conserving soil and water.  Soil and waqter conservation is everybody's business.

Publication Details

  • Published: 1980
  • Publisher: Prentice-Hall
  • ISBN-10: 0138221553
  • Dewey Decimal: 333.72
  • ECHO Library: 333.72 TRO
  • ECHO Asia Library: SB.020

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