H. A. Haantjens

• Agricultural land classification for New Guinea land resources surveys
• Lands of the Aitape-Ambunti area, Papua New Guinea
• Lands of the Goroka - Mount Hagen area, Territory of Papua and New Guinea
• Lands of the Wewak-Lower Sepik area, Territory of Papua and New Guinea
• Major soil groups of New Guinea and their distribution
• Major soil groups of New Guinea and their distribution
• The classification of oxisols (latosols)