The following references provide valuable information that can guide you in your volunteer efforts. 

• Relief web
• Sphere Project
• Monitoring adequacy of rations
• United States Agency for International Development (USAID)
• United Nations
• Adolescent Nutritional Assessments
• Adult Nutritional Assessments
• Instruments and Tools: Nutrition
• Anthropometric Indicators Measurement Guide, 2003 Revised Edition
• Practical Anthropometry 101 and 102
• Emergency Nutrition Network
• Nutrition in Emergencies: Lesson list , United Nations
• Refugee Nutrition Information System (RNIS)
• United Nations High Commissioner for Refugees (UNHCR)
• USAID Famine Early Warning System (FEWS)
• USAID Office of US Foreign Disaster Assistance (OFDA)
• World Food Program (WFP)
• UN Office for the Coordination of Humanitarian Affairs
• Community Therapeutic Care  

Additional references

• Norton Scott, MD, MPH. "The Dermatologist's Baedeker: Preparation for medical assistance missions" from Dermatology Clinics, January 1999, 17(1):187-208 ix-x.
• Young H, et al. Public nutrition in complex emergencies. Lancet. 364(9448):1899-909, 2004
• Kigutha HN. Assessment of dietary intake in rural communities in Africa: experiences in Kenya. American Journal of Clinical Nutrition. 65(4 Suppl):1168S-1172S, 1997 4